https://github.com/tamnd/dbdb-index
Every database management system on dbdb.io, indexed. 1071 systems with stats, charts, and full metadata. Built with Go.
https://github.com/tamnd/dbdb-index
catalog cmu database databases dbdb dbms golang nosql readme-generator relational-database scraper
Last synced: 2 months ago
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Every database management system on dbdb.io, indexed. 1071 systems with stats, charts, and full metadata. Built with Go.
- Host: GitHub
- URL: https://github.com/tamnd/dbdb-index
- Owner: tamnd
- License: apache-2.0
- Created: 2026-04-04T04:12:15.000Z (3 months ago)
- Default Branch: main
- Last Pushed: 2026-04-04T05:09:25.000Z (3 months ago)
- Last Synced: 2026-04-04T06:17:33.370Z (3 months ago)
- Topics: catalog, cmu, database, databases, dbdb, dbms, golang, nosql, readme-generator, relational-database, scraper
- Language: Go
- Homepage: https://dbdb.io
- Size: 263 KB
- Stars: 1
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Database of Databases Index
A comprehensive index of **1071** database management systems catalogued by [Carnegie Mellon University's Database of Databases](https://dbdb.io).
> Auto-generated by [dbdb-index](src/). Data sourced from [dbdb.io](https://dbdb.io).
## At a Glance
The database landscape spans **61 years** of innovation (from 1964 to 2025), across **57 countries**. The most popular data model is **Relational** (362 systems), followed by **Key/Value** (222) and **Document / XML** (195). Open source projects (682) outnumber commercial ones (538) by 1.3x. **C++** is the most common implementation language (196 systems), with **Java** (152) and **C** (121) close behind.
### By Data Model
```
Relational ████████████████████████████████████████ 362
Key/Value █████████████████████████ 222
Document / XML ██████████████████████ 195
Graph ████████ 71
Object-Oriented ███████ 59
Object-Relational ████ 33
Vector ███ 29
Column Family / Wide-Column ███ 25
Triplestore / RDF ███ 24
Array / Matrix ██ 18
Network █ 9
Hierarchical █ 5
Entity-Relationship █ 4
Multi-Value █ 4
Entity-Attribute-Value █ 2
```
### By Decade
Database systems through the decades. The explosion of new projects in the 2010s reflects the rise of NoSQL, NewSQL, and cloud-native databases.
```
1960s █ 4
1970s ██ 20
1980s ████ 41
1990s ███████ 77
2000s ████████████████ 185
2010s ████████████████████████████████████████ 457
2020s ███████████████████ 222
```
### By Country of Origin
```
United States of America ████████████████████████████████████████ 500
China ███████ 87
Germany ██████ 73
United Kingdom █████ 60
Canada ███ 33
France ██ 31
Russia ██ 28
Japan ██ 19
India █ 18
Netherlands █ 17
Sweden █ 17
Australia █ 15
Israel █ 15
Italy █ 13
Switzerland █ 13
```
### By Implementation Language
```
C++ ████████████████████████████████████████ 196
Java ███████████████████████████████ 152
C █████████████████████████ 121
Go █████████████████████ 102
Rust ████████████████ 76
Python ██████████ 47
C# ███████ 35
JavaScript ██████ 31
Erlang ███ 13
Scala ██ 12
TypeScript ██ 12
Clojure ██ 11
Bash █ 6
Assembly █ 5
Ruby █ 5
```
### By License
```
Proprietary ████████████████████████████████████████ 296
Apache v2 ████████████████████████████████████ 268
MIT ███████████████████ 137
BSD ███████ 54
AGPL v3 ██████ 46
GPL v2 ██████ 46
GPL v3 █████ 35
Mozilla Public License ██ 16
LGPL v2 ██ 12
Business Source License █ 11
Eclipse Public License █ 9
LGPL v3 █ 9
```
### By Project Type
```
Open Source ████████████████████████████████████████ 682
Commercial ████████████████████████████████ 538
Hobby ████████ 129
Academic █████ 86
Industrial Research █ 18
Educational █ 8
Internal / Non-Public █ 6
```
## Contents
[#](#)(5) · [A](#a)(59) · [B](#b)(44) · [C](#c)(80) · [D](#d)(65) · [E](#e)(51) · [F](#f)(40) · [G](#g)(46) · [H](#h)(44) · [I](#i)(32) · [J](#j)(21) · [K](#k)(32) · [L](#l)(38) · [M](#m)(50) · [N](#n)(32) · [O](#o)(34) · [P](#p)(60) · [Q](#q)(14) · [R](#r)(57) · [S](#s)(116) · [T](#t)(75) · [U](#u)(10) · [V](#v)(34) · [W](#w)(8) · [X](#x)(8) · [Y](#y)(9) · [Z](#z)(7)
## #
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [/rdb](https://dbdb.io/db/rdb) | /rdb is comprised of shell-level programs that read tables from the standard input and write tabl... | Relational | United States of America | 1984 | Commercial | Bash | Proprietary |
| [1010data](https://dbdb.io/db/1010data) | | | United States of America | 2000 | Commercial | | |
| [3store](https://dbdb.io/db/3store) | 3store is an RDF "triple store", written in C and backed by MySQL and Berkeley DB. It is an optim... | Triplestore / RDF | United Kingdom | 2003 | Academic, Open Source | C | GPL v2 |
| [4D](https://dbdb.io/db/4d) | 4D is a relational DBMS that is integrated with an IDE and a proprietary programming language. It... | Relational | France | 1984 | Commercial | | Proprietary |
| [4store](https://dbdb.io/db/4store) | | Triplestore / RDF | United Kingdom | 2009 | Open Source | C | GPL v3 |
## A
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [abhot](https://dbdb.io/db/abhot) | abhot ("A Brief History Of Time") is a time-series database management system. It is a fork of Ka... | | China | 2017 | Academic, Open Source | Java | Apache v2 |
| [Access](https://dbdb.io/db/access) | Microsoft Access is a database management system from Microsoft that combines the relational Micr... | Relational | United States of America | 1992 | Commercial | C++ | Proprietary |
| [Accumulo](https://dbdb.io/db/accumulo) | Apache Accumulo is a sorted, distributed key-value store based on Google's Bigtable, HDFS and Apa... | Column Family / Wide-Column | United States of America | 2008 | Open Source | Java | Apache v2 |
| [AceBase](https://dbdb.io/db/acebase) | AceBase is a document-oriented DBMS that supports pub/sub real-time notifications. It is designed... | Document / XML | Netherlands | 2018 | Hobby, Open Source | TypeScript | MIT |
| [AceDB](https://dbdb.io/db/acedb) | AceDB ("a C. elegans database") is a biological database for handling genomic data. It was develo... | | United Kingdom | 1989 | Academic, Open Source | C | GPL v2, LGPL v2 |
| [ActivePivot](https://dbdb.io/db/activepivot) | ActivePivot is a distributed, in-memory DBMS designed for HTAP workloads, which supports real-tim... | Relational | France | | Commercial | Java | Proprietary |
| [ActorDB](https://dbdb.io/db/actordb) | ActorDB is a distributed relational SQL database, which is strongly consistent, massively concurr... | Relational | Slovenia | 2014 | Commercial, Open Source | Erlang | Mozilla Public License |
| [Adabas](https://dbdb.io/db/adabas) | ADABAS ("adaptable database system") is a database package developed by Software AG for IBM mainf... | | Germany | 1971 | Commercial | | Proprietary |
| [Adaptive Server Enterprise](https://dbdb.io/db/adaptive-server-enterprise) | Adaptive Server Enterprise (ASE) (also known as "Sybase DB" or "Sybase ASE") is a relational DBMS... | Relational | United States of America | 1987 | Commercial | C, C++ | Proprietary |
| [Advantage Database Server](https://dbdb.io/db/advantage-database-server) | Sybase Advantage Database Server is a relational DBMS released in the 1990s. | Relational | United States of America | 1993 | Commercial | | Proprietary |
| [Aerospike](https://dbdb.io/db/aerospike) | Aerospike is a distributed key-value DBMS. It is mainly targeted at OLTP workloads with large num... | Key/Value, Document / XML, Vector | United States of America | 2009 | Commercial, Open Source | C | AGPL v3 |
| [AgateDB](https://dbdb.io/db/agatedb) | AgateDB is an embeddable, persistent key-value DBMS written in Rust. It is built by Pingcap as a ... | Key/Value | China | 2019 | Industrial Research, Open Source | Rust | Apache v2 |
| [AGEDB](https://dbdb.io/db/agedb) | AGEDB is the commercial version of PostgreSQL using the Apache AGE graph API extension. | Graph | Canada | 2019 | Commercial, Open Source | C | Apache v2 |
| [AgensGraph](https://dbdb.io/db/agensgraph) | AgensGraph is a multi-model database based on PostgreSQL RDBMS, and supports both relational and ... | Relational, Key/Value, Document / XML, Graph | United States of America | 2013 | Commercial, Open Source | C | Apache v2 |
| [Aito](https://dbdb.io/db/aito) | Aito is a cloud-based predictive database, that provides predictive queries as an addition to the... | | Finland | 2017 | Commercial | Scala | Proprietary |
| [AKDB](https://dbdb.io/db/akdb) | AKDB ("Avtomat Kalasnikova Database") is an educational relational DBMS developed at the Universi... | Relational | Croatia | 2009 | Academic, Educational, Open Source | C | |
| [Akiban](https://dbdb.io/db/akiban) | Akiban was a MySQL storage engine that performed automatic denormalization of relational tables t... | | United States of America | 2009 | Commercial | | |
| [Akumuli](https://dbdb.io/db/akumuli) | Akumuli is a time-series DBMS. | | Russia | 2013 | Open Source | C++ | Apache v2 |
| [Akutan](https://dbdb.io/db/akutan) | Akutan is a distributed knowledge graph DBMS written in Go. | Triplestore / RDF | United States of America | 2019 | Industrial Research, Open Source | Go | Apache v2 |
| [AlaSQL](https://dbdb.io/db/alasql) | AlaSQL is a relational DBMS designed to run in web browsers and JavaScript-based application serv... | Relational, Document / XML | Russia | 2014 | Open Source | JavaScript | MIT |
| [AlchemyDB](https://dbdb.io/db/alchemydb) | AlchemyDB is a NewSQL RDBMS built on top [Redis](/db/redis). | Relational | United States of America | 2010 | Commercial, Open Source | C | AGPL v3 |
| [Alenka](https://dbdb.io/db/alenka) | Alenka is a GPU-based query execution engine. | Relational | United States of America | 2012 | Open Source | C | Apache v2 |
| [Algebraix](https://dbdb.io/db/algebraix) | | | United States of America | 2009 | Commercial | | Proprietary |
| [AllegroGraph](https://dbdb.io/db/allegrograph) | AllegroGraph is a database and application framework for building Semantic Web applications. It c... | Triplestore / RDF | United States of America | 2004 | Commercial | Lisp | Proprietary |
| [AlloyDB](https://dbdb.io/db/alloydb) | AlloyDB is a fully-managed database system that is a fork from PostgreSQL created by Google Cloud... | Object-Relational | United States of America | 2022 | Commercial | | Proprietary |
| [Altibase](https://dbdb.io/db/altibase) | Atibase is a relational open-source database management system that is compatible and interoperab... | Relational | South Korea | 1999 | Commercial | C, C++ | AGPL v3 |
| [Amelie](https://dbdb.io/db/amelie) | Amelie is an in-memory relational DBMS designed for OLTP workloads. | Relational | Cyprus | 2023 | Hobby, Open Source | C | AGPL v3 |
| [Amisa Server](https://dbdb.io/db/amisa-server) | Amisa Server was a NoSQL database-as-a-service. | Document / XML | Canada | 2014 | Commercial | | |
| [AncelusDB](https://dbdb.io/db/ancelusdb) | AncelusDB is time-series DBMS. | Entity-Relationship | United States of America | 1983 | Commercial | | Proprietary |
| [AngstromDB](https://dbdb.io/db/angstromdb) | AngstromDB is a NoSQL key-value DBMS based on [LMDB](/db/lmdb). | Key/Value | France | 2013 | Hobby, Open Source | C | Apache v2 |
| [AnnaDB](https://dbdb.io/db/annadb) | AnnaDB is an in-memory document-oriented NoSQL DBMS that stores data in proprietary [Typed Simple... | Document / XML | Germany | 2021 | Hobby, Open Source | Rust | Apache v2 |
| [AnnDB](https://dbdb.io/db/anndb) | AnnDB is a distributed vector DBMS that supports approximate nearest neighbor queries. | Vector | Czechia | 2020 | Commercial, Open Source | Go | Apache v2 |
| [AntDB](https://dbdb.io/db/antdb) | AntDB is a distributed DBMS forked from PostgreSQL. | Object-Relational | China | | Commercial, Open Source | C | Apache v2 |
| [Antidote](https://dbdb.io/db/antidote) | AntidoteDB is a geo-replicated key-value DBMS that uses CRDTs to synchronize changes between nodes. | Key/Value | France | 2015 | Academic, Open Source | Erlang | Apache v2 |
| [AnuDB](https://dbdb.io/db/anudb) | AnuDB is a serverless document-oriented DBMS for C++ applications. | Document / XML | India | 2025 | Hobby, Open Source | C++ | MIT |
| [AnzoGraph](https://dbdb.io/db/anzograph) | AnzoGraph is an in-memory distributed graph DBMS designed for analytics. | Graph | United States of America | 2007 | Commercial | | Proprietary |
| [AODBM](https://dbdb.io/db/aodbm) | AODBM ("append only database manager") is designed in the style of dbm. | | United Kingdom | 2011 | Open Source | C | LGPL v3 |
| [Apollo](https://dbdb.io/db/apollo-facebook) | Apollo is Facebook's document-oriented DBMS announced in 2014. | Document / XML | United States of America | 2014 | Commercial | | |
| [Apollo](https://dbdb.io/db/apollo) | Apollo is a Windows-based desktop database management system that supports FoxPro files. | | United States of America | 1999 | Commercial | | Proprietary |
| [Arakoon](https://dbdb.io/db/arakoon) | Arakoon was a distributed key-value store with strong consistency guarantees. | Key/Value | Belgium | 2010 | Open Source | Ocaml | Apache v2 |
| [ArangoDB](https://dbdb.io/db/arangodb) | ArangoDB is a multi-model mostly-memory database. It supports key-value, documents, and graphs st... | Key/Value, Document / XML, Graph | Germany | 2011 | Commercial, Open Source | C++ | Apache v2 |
| [ArcadeDB](https://dbdb.io/db/arcadedb) | ArcadeDB is a multi-model DBMS created as a fork from OrientDB. | Relational, Key/Value, Document / XML, Graph | United Kingdom | 2021 | Commercial, Open Source | Java | Apache v2 |
| [ArcticDB](https://dbdb.io/db/arcticdb) | ArcticDB is an embedded, columnar datastore designed for analytical workloads on time-series data... | Relational | United Kingdom | 2018 | Open Source | C++ | Business Source License |
| [Ardb](https://dbdb.io/db/ardb) | Ardb is a Redis-compatible NoSQL DBMS that is designed to support multiple storage backends. | Key/Value | China | 2013 | Open Source | C++ | BSD |
| [AresDB](https://dbdb.io/db/aresdb) | AresDB is a GPU-based real-time analytics database with low memory overhead, real-time upserts wi... | Relational | United States of America | 2018 | Open Source | C, C++, Go | Apache v2 |
| [Asami](https://dbdb.io/db/asami) | Asami is a graph-oriented DBMS written in Clojure. | Graph | United States of America | 2018 | Hobby, Open Source | Clojure | Eclipse Public License |
| [Assassin](https://dbdb.io/db/assassin) | Assassin is a decentralized key-value DBMS written in JavaScript. It uses a peer-to-peer protocol... | Key/Value | United States of America | 2020 | Open Source | JavaScript | MIT |
| [Aster Data](https://dbdb.io/db/aster-data) | Aster Data is a relational DBMS designed for OLAP workloads. | Object-Relational | United States of America | 2005 | Commercial | | Proprietary |
| [AsterixDB](https://dbdb.io/db/asterixdb) | AsterixDB is a DBMS that is highly parallel and, consequently, highly scalable. It has its own se... | Document / XML | United States of America | 2009 | Academic, Open Source | Java | Apache v2 |
| [Atlas](https://dbdb.io/db/atlas) | Atlas is a dimensional time series data database management system for near real-time operational... | | United States of America | 2014 | Open Source | Scala | |
| [AtomicDB](https://dbdb.io/db/atomicdb) | AtomicDB is an associative database. Compared with relational database, associative model stores ... | Object-Oriented | United States of America | 2011 | Commercial | | Proprietary |
| [Aurora](https://dbdb.io/db/aurora) | Amazon Aurora is a relational database offered as a service in Amazon's AWS. Based on the open so... | Relational | United States of America | 2014 | Commercial | C | |
| [Aurora DSQL](https://dbdb.io/db/aurora-dsql) | Aurora DSQL is a serverless PostgreSQL-compatible database service at Amazon. | Relational | United States of America | 2023 | Commercial | | Proprietary |
| [AverageDB](https://dbdb.io/db/averagedb) | AverageDB (AvgDB) is a serverless document-oriented DBMS. It is a parody DBMS that does not actua... | Document / XML | United States of America | 2024 | Hobby, Open Source | TypeScript | Apache v2 |
| [AvionDB](https://dbdb.io/db/aviondb) | AvionDB is decentralized document DBMS built on top of [IPFS](https://ipfs.io). It uses [OrbitDB]... | Document / XML | India | 2020 | Commercial, Open Source | JavaScript | MIT |
| [AwaDB](https://dbdb.io/db/awadb) | AwaDB is a vector DBMS written in C++ that supports nearest-neighbor search. | Document / XML, Vector | China | 2023 | Open Source | C++ | Apache v2 |
| [Axibase](https://dbdb.io/db/axibase) | Axibase is a non-relational, time series DBMS optimized for collecting, storing, and analyzing te... | | United States of America | 2004 | Commercial | | Proprietary |
| [Axion](https://dbdb.io/db/axion) | Axion is a relational database system supporting SQL and JDBC written in and for the Java program... | Relational | United States of America | 2002 | Open Source | Java | |
| [Azure SQL Database](https://dbdb.io/db/azure-sql-database) | Microsoft Azure SQL Database is a managed cloud database-as-a-service based. It shares the SQL Se... | Relational | United States of America | 2009 | Commercial | C++ | Proprietary |
## B
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [BabuDB](https://dbdb.io/db/babudb) | BabuDB is an embedded key-value DBMS based on log-structured merge trees. There are two implement... | Key/Value | Germany | 2008 | Academic, Open Source | C++, Java | |
| [BadgerDB](https://dbdb.io/db/badgerdb) | Badger started as a key-value store, so the goal was to use the latest research to build a key-va... | Key/Value | United States of America | 2017 | Open Source | Go | Apache v2 |
| [BagelDB](https://dbdb.io/db/bageldb) | BagelDB is a proprietary hosted vector DBMS designed to support data sharing. | Vector | Canada | 2023 | Commercial | | Proprietary |
| [Bagri](https://dbdb.io/db/bagri) | Bagri is a document-oriented DBMS designed to run on top of a distributed cache (e.g., Hazelcast,... | Document / XML | Russia | 2014 | Open Source | Java | Apache v2 |
| [BaikalDB](https://dbdb.io/db/baikaldb) | BaikalDB is a distributed OLTP database system created by Baidu. | Relational | China | 2018 | Open Source | C++ | Apache v2 |
| [BangDB](https://dbdb.io/db/bangdb) | BangDB is a NoSQL DBMS designed for real-time data processing. The DBMS supports structured, semi... | Key/Value | India | 2015 | Commercial, Open Source | C | BSD |
| [BaseX](https://dbdb.io/db/basex) | BaseX is a light-weight XML database management system and XQuery processor. | Document / XML | Germany | 2007 | Academic, Open Source | Java | BSD |
| [Basic](https://dbdb.io/db/basic) | Basic is a document-oriented database service. | Document / XML | United States of America | 2023 | Commercial | | Proprietary |
| [BASIS](https://dbdb.io/db/basis) | The BASIS DBMS is a relational DBMS that supports SQL. | Relational | United States of America | | Commercial | | Proprietary |
| [BayesDB](https://dbdb.io/db/bayesdb) | BayesDB is a probabilistic programming platform that provides built-in non-parametric Bayesian mo... | | United States of America | 2015 | Academic, Open Source | Python | Apache v2 |
| [bbolt](https://dbdb.io/db/bbolt) | bbolt is a fork of the abandoned [BoltDB](/db/boltdb) project. The authors are maintaining the sy... | Key/Value | United States of America | 2017 | Open Source | Go | MIT |
| [BBoxDB](https://dbdb.io/db/bboxdb) | BBoxDB is a distributed DBMS that supports bounding box queries on multi-dimensional data. | Array / Matrix | Germany | 2015 | Open Source | Java | Apache v2 |
| [Beagle SQL](https://dbdb.io/db/beagle-sql) | Beagle SQL was an object-relational DBMS from the 1990s. | Relational, Object-Relational | United States of America | 1996 | Open Source | C++ | |
| [Bedrock](https://dbdb.io/db/bedrock) | Bedrock is a distributed relational DBMS built on top of SQLite. It is a distributed relational d... | Relational | United States of America | 2016 | Open Source | C++ | LGPL v3 |
| [BergDB](https://dbdb.io/db/bergdb) | BergDB is an embedded, document-oriented, schemaless, NoSQL DBMS for Java and .NET applications. | Document / XML | Sweden | 2013 | Open Source | Java | AGPL v3 |
| [Beringei](https://dbdb.io/db/beringei) | Beringei is an embedded in-memory storage engine for time series data developed by Facebook. It w... | Key/Value | United States of America | 2015 | Open Source | C++ | BSD |
| [Berkeley DB](https://dbdb.io/db/berkeley-db) | BerkeleyDB (sometimes referred to as simply "BDB") is an embedded open-source, database storage l... | Key/Value, Document / XML | United States of America | 1994 | Commercial, Open Source | | AGPL v3, Apache v2 |
| [BerylDB](https://dbdb.io/db/beryldb) | BerylDB is a key-value DBMS that supports storing lists, sets, and maps. It uses RocksDB as its u... | Key/Value | Chile | 2021 | Hobby, Open Source | C++ | BSD |
| [BigchainDB](https://dbdb.io/db/bigchaindb) | BigchainDB is an open-source blockchain database. It is a NoSQL database that has blockchain prop... | Key/Value, Document / XML | Germany | 2015 | Commercial, Open Source | Python | Apache v2 |
| [BigQuery](https://dbdb.io/db/bigquery) | BigQuery is a cloud-based interactive query service for large datasets. It is built upon Google's... | Document / XML | United States of America | 2010 | Commercial | C++, Java, Python | Proprietary |
| [BinaryRage](https://dbdb.io/db/binaryrage) | BinaryRage is an embedded key-value store DBMS written for .NET environments. | Key/Value | Denmark | 2012 | Hobby, Open Source | C# | |
| [Bitcask](https://dbdb.io/db/bitcask) | Bitcask is an embedded key-value DBMS that uses a log-structured storage format. The system inclu... | Key/Value | Australia | 2019 | Open Source | Go | MIT |
| [Bitsy](https://dbdb.io/db/bitsy) | Bitsy is a embeddable in-memory graph database that is compatible with Tinkerpop3. It is based on... | Graph | United States of America | 2013 | Open Source | Java | Apache v2 |
| [BitYota](https://dbdb.io/db/bityota) | BitYota was a cloud data warehouse relational DBMS. | Relational | United States of America | 2011 | Commercial | | Proprietary |
| [BlackRay](https://dbdb.io/db/blackray) | BlackRay was a relational DBMS designed to offer performance features commonly associated with se... | Relational | Germany | 2005 | Commercial, Open Source | C++ | GPL v2 |
| [Blazegraph](https://dbdb.io/db/blazegraph) | Blazegraph is an open-source graph database system written in Java. Blazegraph is supported for u... | Graph, Triplestore / RDF | United States of America | 2006 | Commercial, Open Source | Java | GPL v2 |
| [BlazingSQL](https://dbdb.io/db/blazingsql) | BlazingSQL is a distributed GPU-accelerated SQL engine with data lake integration, where data lak... | Relational | Peru | 2015 | Commercial, Open Source | C++ | Apache v2, Proprietary |
| [BlinkDB](https://dbdb.io/db/blinkdb) | BlinkDB is an approximate query engine built on top of Hive and Shark ("Hive on Spark", the forme... | Relational | United States of America | 2012 | Academic, Open Source | | Apache v2 |
| [BlobCity](https://dbdb.io/db/blobcity) | BlobCity is an in-memory relational database that supports both transaction and analytical worklo... | Relational, Document / XML | India | 2015 | Commercial | | Proprietary |
| [Blueflood](https://dbdb.io/db/blueflood) | | | United States of America | 2013 | Open Source | Java | Apache v2 |
| [BoJack](https://dbdb.io/db/bojack) | BoJack is a single-node key-value store written in Crystal, largely inspired by Redis. | Key/Value | Germany | 2016 | Open Source | Crystal | MIT |
| [BoltDB](https://dbdb.io/db/boltdb) | BoltDB is an embedded ACID key/value database written in Go. It supports MVCC with shadow paging ... | Key/Value | United States of America | 2013 | Open Source | Go | MIT |
| [BonsaiDb](https://dbdb.io/db/bonsaidb) | BonsaiDb is a key-value store DBMS written in Rust. It can operate as an embedded DBMS and as a s... | Key/Value | United States of America | 2021 | Open Source | Rust | Apache v2, MIT |
| [BrightstarDB](https://dbdb.io/db/brightstardb) | BrightstarDB is a RDF DBMS for the .NET platform. | Triplestore / RDF | United Kingdom | 2012 | Open Source | C# | MIT |
| [BroDB](https://dbdb.io/db/brodb) | BroDB is a parody DBMS where applications interact with the system using a query language as if i... | Relational | India | 2024 | Hobby, Open Source | Go | |
| [Brytlyt](https://dbdb.io/db/brytlyt) | Brytlyt is a GPU-accelerated DBMS built on top of Postgres. | Object-Relational | United Kingdom | 2013 | Commercial | C, C++ | Proprietary |
| [BTDB](https://dbdb.io/db/btdb) | BTDB is an embedded key/value DBMS designed for .NET applications. It also provides an object-ori... | Key/Value, Object-Oriented | Czechia | 2010 | Open Source | C# | MIT |
| [BTrDB](https://dbdb.io/db/btrdb) | BTrDB (*Berkeley Tree Database*) is a time-series database that uses K-Ary trees to store data. | Relational | United States of America | 2014 | Academic, Open Source | Go | GPL v3 |
| [Btrieve](https://dbdb.io/db/btrieve) | Btrieve is an embedded navigational DBMS engine. | Network | United States of America | 1982 | Commercial | | |
| [Bubba](https://dbdb.io/db/bubba) | | | United States of America | 1990 | Academic | | |
| [bugfruit](https://dbdb.io/db/bugfruit) | bugfruit is a embedded key-value DBMS written in Go. | Key/Value | United States of America | 2022 | Hobby, Open Source | Go | BSD |
| [BuntDB](https://dbdb.io/db/buntdb) | BuntDB is an embeddable, in-memory key/value database with custom indexing and geospatial support. | Key/Value | United States of America | 2016 | Open Source | Go | MIT |
| [BusTub](https://dbdb.io/db/bustub) | BusTub is an educational disk-oriented DBMS used for teaching [database courses](https://15445.co... | Relational | United States of America | 2019 | Academic, Educational, Open Source | C++ | MIT |
| [ByConity](https://dbdb.io/db/byconity) | ByConity is a cloud-native OLAP DBMS based on Clickhouse. | Relational | China | 2020 | Commercial, Open Source | C++ | Apache v2 |
## C
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [C-Store](https://dbdb.io/db/c-store) | C-Store is a column-oriented DBMS designed for read-optimized OLAP workloads. It adopts a column ... | Relational | United States of America | 2005 | Academic, Open Source | C++ | BSD |
| [Cachegrand](https://dbdb.io/db/cachegrand) | Cachegrand is an Redis-compatible key-value DBMS designed for caching. | Key/Value | Switzerland | 2018 | Commercial, Open Source | C | BSD |
| [Caché](https://dbdb.io/db/cache) | Caché stores data in multidimensional arrays for storing hierarchically structured data. | Array / Matrix | United States of America | 1997 | Commercial | | Proprietary |
| [Calvin](https://dbdb.io/db/calvin) | Calvin is a scalable transactional database system that leverages determinism to guarantee active... | Relational | United States of America | 2012 | Academic, Open Source | C++ | |
| [CamaDB](https://dbdb.io/db/camadb) | CamaDB is an embedded document-oriented DBMS for Node, Electron and browser-based environments. | Document / XML | | 2021 | Hobby, Open Source | TypeScript | MIT |
| [CapyDB](https://dbdb.io/db/capydb) | CapyDB is a document-oriented DBMS with built-in support for approximate nearest neighbor searche... | Document / XML | United States of America | 2024 | Commercial | | Proprietary |
| [CaskDB](https://dbdb.io/db/caskdb) | CaskDB is an embedded and persistent key-value DBMS. It was built an educational tool for people ... | Key/Value | India | 2022 | Educational, Open Source | Python | MIT |
| [Cassandra](https://dbdb.io/db/cassandra) | Apache Cassandra is a free and open source NoSQL distributed database management system. It provi... | Column Family / Wide-Column, Key/Value | United States of America | 2008 | Open Source | Java | Apache v2 |
| [CastleDB](https://dbdb.io/db/castledb) | CastleDB is a structured static DBMS platform designed to make it easier for multiple people to c... | Document / XML | France | 2012 | Open Source | Haxe | ISC License |
| [Cayley](https://dbdb.io/db/cayley) | Cayley is an open-source graph database query engine inspired by the Freebase and Google's Knowle... | Triplestore / RDF | United States of America | 2014 | Open Source | Go | Apache v2 |
| [cdb](https://dbdb.io/db/cdb) | cdb is a simple package for creating and reading constant (i.e., immutable) databases. | Key/Value | United States of America | | Open Source | | Public Domain |
| [Cedalio](https://dbdb.io/db/cedalio) | Cedalio is a document-oriented blockchain database as a service. | Document / XML | United States of America | 2022 | Commercial | | Proprietary |
| [CedarDB](https://dbdb.io/db/cedardb) | CedarDB is the commercial offering of the academic Umbra relational DBMS. | | Germany | 2023 | Commercial | C++ | Proprietary |
| [chaozzDB](https://dbdb.io/db/chaozzdb) | chaozzDB is a proof-of-concept embedded, flat-file SQL DBMS written entirely in PHP. | | Netherlands | 2008 | Hobby, Open Source | PHP | Creative Commons License |
| [chDB](https://dbdb.io/db/chdb) | chDB is an embedded SQL OLAP based on ClickHouse. | Relational | Singapore | 2023 | Open Source | C++ | Apache v2 |
| [Cheetah](https://dbdb.io/db/cheetah) | Cheetah was an embedded dBase-compatiable DBMS engine for Windows applications. | Relational | Canada | 2005 | Open Source | Visual Basic | GPL v2 |
| [CheetahDB](https://dbdb.io/db/cheetahdb) | CheetahDB is a relational DBMS designed to execute OLAP queries on GPUs. | Relational | United States of America | 2018 | Commercial | | Proprietary |
| [Chroma](https://dbdb.io/db/chroma) | Chroma is a document-oriented DBMS designed to support the generation and searches on embeddings ... | Document / XML | United States of America | 2022 | Commercial, Open Source | Python | Apache v2 |
| [chromem-go](https://dbdb.io/db/chromem-go) | chromem-go is an embedded vector database for Go-lang applications. The design of the DBMS's API ... | Vector | Germany | 2023 | Hobby, Open Source | Go | AGPL v3 |
| [ChromoDB](https://dbdb.io/db/chromodb) | ChromoDB is a key-value DBMS based on B-epsilon (fractal) trees. | Key/Value | Canada | 2024 | Hobby, Open Source | Go | GPL v3 |
| [Chronicle Map](https://dbdb.io/db/chronicle-map) | Chronicle Map is an in-memory key-value DBMS designed for low-latency applications. | Key/Value | United Kingdom | 2014 | Commercial, Open Source | Java | LGPL v3 |
| [Chronix](https://dbdb.io/db/chronix) | Chronix is a collection of Java-based frameworks for time-series data storage and analysis. It is... | | Germany | 2015 | Commercial, Open Source | Java | Apache v2 |
| [Citus](https://dbdb.io/db/citus) | Citus is an extension to Postgres to make it a distributed, shared-nothing DBMS. | Relational | Turkey | 2010 | Commercial, Open Source | C | AGPL v3 |
| [ClearDB](https://dbdb.io/db/cleardb) | ClearDB is a distributed, cloud-hosted, database-as-a-service version of MySQL. Its primary purpo... | Relational | United States of America | 2010 | Commercial | C++ | Proprietary |
| [ClickHouse](https://dbdb.io/db/clickhouse) | CilckHouse is an open-source column-oriented OLAP DBMS. It is designed to provide linear scalabil... | Relational | Russia | 2016 | Commercial, Open Source | C++ | Apache v2 |
| [CloseVector](https://dbdb.io/db/closevector) | CloseVector is a vector database DBMS designed for Javascript-based environments. | Document / XML, Vector | China | 2023 | Commercial, Open Source | | Apache v2 |
| [Cloud BigTable](https://dbdb.io/db/cloud-bigtable) | Cloud BigTable is a distributed storage system used in Google. BigTable is designed mainly for sc... | Column Family / Wide-Column | United States of America | 2005 | Commercial | | |
| [Cloud Datastore](https://dbdb.io/db/cloud-datastore) | | | United States of America | | Commercial | | Proprietary |
| [Cloud Firestore](https://dbdb.io/db/cloud-firestore) | Firestore is a serverless NoSQL DBMS that runs on top of Spanner. It is the backing system for Go... | Document / XML | United States of America | 2017 | Commercial | | Proprietary |
| [Cloud Memorystore](https://dbdb.io/db/cloud-memorystore) | | | United States of America | | Commercial | | Proprietary |
| [Cloud Spanner](https://dbdb.io/db/cloud-spanner) | Spanner is Google's globally distributed NewSQL database management system. It follows multi-vers... | | United States of America | 2007 | Commercial | | Proprietary |
| [Cloud SQL](https://dbdb.io/db/cloud-sql) | | | United States of America | | Commercial | | Proprietary |
| [Cloudant](https://dbdb.io/db/cloudant) | Cloudant is a non-relational, distributed database service based on CouchDB. | Document / XML | United States of America | 2008 | Commercial | | |
| [Cloudberry](https://dbdb.io/db/cloudberry) | Cloudberry (sometimes referred to as "CloudberryDB" or "CBDB") is a fork of Greenplum. | Object-Relational | China | 2023 | Commercial, Open Source | C | Apache v2 |
| [CloudKit](https://dbdb.io/db/cloudkit) | CloudKit provides schema-free, auto-versioned, RESTful JSON storage. | Document / XML | United States of America | 2008 | Open Source | | MIT |
| [CloudSearch](https://dbdb.io/db/cloudsearch) | Amazon CloudSearch is a managed search engine service based on Apache Solr. | | United States of America | 2012 | Commercial | | Proprietary |
| [CloverDB](https://dbdb.io/db/cloverdb) | CloverDB is a document-oriented DBMS designed for Go-lang applications. | Document / XML | Italy | 2022 | Hobby, Open Source | Go | MIT |
| [Clusterpoint](https://dbdb.io/db/clusterpoint) | Clusterpoint is a NoSQL document database management system. | Document / XML | Latvia | 2006 | Commercial | | Proprietary |
| [Clustrix](https://dbdb.io/db/clustrix) | Clustrix is a clustered relational DBMS designed to be a a drop-in MySQL replacement. It is ACID ... | Relational | United States of America | 2006 | Commercial | C | Proprietary |
| [CnosDB](https://dbdb.io/db/cnosdb) | CnosDB is a distributed time-series database management system written in Rust. | Relational | China | 2021 | Commercial, Open Source | Rust | AGPL v3 |
| [CockroachDB](https://dbdb.io/db/cockroachdb) | CockroachDB (sometimes shortened as CRDB) is a free and open source distributed SQL database buil... | Relational | United States of America | 2014 | Commercial, Open Source | Go | Business Source License |
| [CodernityDB](https://dbdb.io/db/codernitydb) | CodernityDB is NoSQL key-value DBMS written in Python. | Key/Value | Poland | 2011 | Open Source | Python | Apache v2 |
| [CoGaDB](https://dbdb.io/db/cogadb) | CoGaDB was an academic column-oriented DBMS that supported GPU acceleration. It was developed by ... | Relational | Germany | 2012 | Academic, Open Source | C++ | GPL v3 |
| [CogDB](https://dbdb.io/db/cogdb) | CogDB is an embedded RDF (graph) DBMS library for Python applications. | Triplestore / RDF | Canada | 2017 | Hobby, Open Source | Python | MIT |
| [Coherence](https://dbdb.io/db/coherence) | | Object-Oriented | United States of America | 2000 | Commercial | Java | Proprietary |
| [Column](https://dbdb.io/db/column) | Column is an embedded DBMS engine that stores in-memory columnar data. | Relational | United Arab Emirates | 2021 | Hobby, Open Source | Go | MIT |
| [Comdb2](https://dbdb.io/db/comdb2) | Comdb2 is a consistent, synchronously replicated SQL database built by Bloomberg. | Relational | United States of America | 2004 | Open Source | C | Apache v2 |
| [Compass](https://dbdb.io/db/compass) | Compass is a powerful Search Engine mapping built on the Lucene API. It is designed for fast sear... | Document / XML, Object-Oriented | United Kingdom | 2006 | Open Source | Java | Apache v2 |
| [CompleteDB](https://dbdb.io/db/completedb) | CompleteDB is an in-memory relational DBMS for transactional workloads. | Relational | United States of America | 2012 | Commercial | C++ | Proprietary |
| [ComposeDB](https://dbdb.io/db/composedb) | ComposeDB is a decentralized graph DBMS running on top of IPFS. | Graph | Ireland | 2022 | Open Source | TypeScript | Apache v2, MIT |
| [ComputeDB](https://dbdb.io/db/computedb) | ComputeDB is a distributed, in-memory OLAP DBMS. | Relational | United States of America | 2015 | Commercial, Open Source | Java | Apache v2 |
| [ConceptBase.cc](https://dbdb.io/db/conceptbasecc) | ConceptBase.cc is a multi-user deductive and object-oriented database system for metamodeling and... | Object-Oriented | Germany | 1995 | Academic, Open Source | | BSD |
| [Concourse](https://dbdb.io/db/concourse) | Concourse is a hybrid operational and analytics document-oriented DBMS that supported automatic i... | Document / XML | United States of America | 2012 | Commercial, Open Source | Java | Apache v2 |
| [Condensation](https://dbdb.io/db/condensation) | Condensation is a decentralized, encrypted block-chain database system. | Object-Oriented | Switzerland | 2020 | Open Source | Java | Apache v2 |
| [ConfluxDB](https://dbdb.io/db/confluxdb) | | | Canada | 2014 | Academic | | |
| [Consus](https://dbdb.io/db/consus) | Consus is a geo-replicated transactional key-value store. | Key/Value | United States of America | 2015 | Academic, Open Source | C++ | BSD |
| [Consus](https://dbdb.io/db/consus-java) | Consus is a Java embedded object-relational database management system. | Object-Relational | Russia | 2004 | Open Source | Java | BSD |
| [CORAL](https://dbdb.io/db/coral) | Coral is a deductive database management system that supports a rich declarative language, and an... | | United States of America | 1988 | Academic, Open Source | C++ | |
| [CoreObject](https://dbdb.io/db/coreobject) | CoreObject is a version-controlled object database for Objective-C. It uses Mercurial to manage v... | Object-Oriented | France | 2007 | Academic, Open Source | Objective-C | MIT |
| [CornerStone](https://dbdb.io/db/cornerstone) | Cornerstone was a relational database that supported Microsoft DOS. It was primarily marketed for... | Relational | United States of America | 1985 | Commercial | | Proprietary |
| [CortexDB](https://dbdb.io/db/cortexdb) | CortexDB is a self-learning multi-model NoSQL database. | Key/Value, Document / XML | Germany | 2014 | Commercial | | Proprietary |
| [Cosmos DB](https://dbdb.io/db/cosmos-db) | CosmosDB is a globally distributed, consistent, schema-less, multi-model document database that p... | Column Family / Wide-Column, Key/Value, Graph | United States of America | 2015 | Commercial | C++ | Proprietary |
| [Couchbase](https://dbdb.io/db/couchbase) | Couchbase is an open-source, distributed NoSQL document database. It supports the Memcached clien... | Key/Value, Document / XML | United States of America | 2010 | Commercial, Open Source | C, C++, Erlang, Go | Apache v2 |
| [CouchDB](https://dbdb.io/db/couchdb) | CouchDB ("**c**luster **o**f **u**nreliable **c**ommodity **h**ardware") is a document-oriented N... | Document / XML | United States of America | 2005 | Open Source | Erlang | Apache v2 |
| [CovenantSQL](https://dbdb.io/db/covenantsql) | CovenantSQL is a decentralized SQL database management system derived from SQLite and built on to... | Relational | China | 2018 | Commercial, Open Source | Go | Apache v2 |
| [CozoDB](https://dbdb.io/db/cozodb) | CozoDB is transactional, relational DBMS that supports Datalog queries on graph data. | Relational | United Kingdom | 2022 | Hobby, Open Source | Rust | Mozilla Public License |
| [CQL++](https://dbdb.io/db/cql) | CQL++ is a SQL and B+tree/ISAM database management system providing a single user or client/server. | Relational | United States of America | 1994 | Commercial, Open Source | C++ | GPL v2, Proprietary |
| [CQLite](https://dbdb.io/db/cqlite) | CQLite is an embedded graph DBMS implemented in Rust. | Graph | United Kingdom | 2021 | Hobby, Open Source | Rust | MIT |
| [CrateDB](https://dbdb.io/db/cratedb) | CrateDB is an open-source, distributed, shared-nothing SQL database system developed by Crate.io,... | | Austria | 2014 | Commercial, Open Source | Java | Apache v2 |
| [Crescando](https://dbdb.io/db/crescando) | Crescando is a distributed relational table implementation designed to perform execute queries an... | Relational | Switzerland | 2009 | Academic | | |
| [CrossDB](https://dbdb.io/db/crossdb) | CrossDB is a proprietary embedded DBMS for C/C++ applications. | Relational | China | 2019 | Hobby | C++ | Proprietary |
| [CrowdDB](https://dbdb.io/db/crowddb) | CrowdDb is a hybrid computer-human database that processes queries using crowd-sourcing if the da... | Relational | United States of America | 2011 | Academic | | |
| [CSQL](https://dbdb.io/db/csql) | CSQL is an open-source in-memory relational DBMS. | Relational | India | 2005 | Commercial, Open Source | | GPL v2 |
| [CSV Comp DB](https://dbdb.io/db/csv-comp-db) | CSV Comp DB is a proprietary desktop DBMS based on CSV files. It is designed for Windows applicat... | Relational | Brazil | 2007 | Hobby | Pascal | Proprietary |
| [cubeSQL](https://dbdb.io/db/cubesql) | cubeSQL is wrapper system that provides remote access to a SQLite DBMS. | Relational | Italy | 2003 | Commercial | | Proprietary |
| [CubicWeb](https://dbdb.io/db/cubicweb) | | Graph | France | 2000 | Open Source | Python | LGPL v2 |
| [Cubrick](https://dbdb.io/db/cubrick) | Cubrick is a distributed multidimensional in-memory DBMS developed for internal use at Facebook. ... | Column Family / Wide-Column | United States of America | 2016 | Industrial Research | | Proprietary |
| [Cubrid](https://dbdb.io/db/cubrid) | CUBRID is an open-source object-relational OLTP database management system under GPL/BSD license,... | Object-Relational | South Korea | 2008 | Open Source | C | BSD, GPL v2 |
| [CurioDB](https://dbdb.io/db/curiodb) | CurioDB is a distributed and persistent NoSQL database that is compatible with Redis. It uses [Ak... | Key/Value | Australia | 2015 | Open Source | Scala | BSD |
| [CursusDB](https://dbdb.io/db/cursusdb) | CursusDB is an in-memory document-oriented DBMS that supports SQL. | Document / XML | Canada | 2023 | Hobby, Open Source | Go | GPL v3 |
## D
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [D3](https://dbdb.io/db/d3) | D3 is a multi-dimensional relational database management system. | Relational | United States of America | 1999 | Commercial | | |
| [Daffodil DB](https://dbdb.io/db/daffodil-db) | | Relational | India | 2003 | Commercial | Java | Proprietary |
| [DaggerDB](https://dbdb.io/db/daggerdb) | DaggerDB is an ACID column store / OLAP database management system for .Net environments. | Relational | Sweden | 2014 | Commercial | | |
| [DalmatinerDB](https://dbdb.io/db/dalmatinerdb) | DalmatinerDB is a metric database built on Riak. | | Germany | 2014 | Open Source | Erlang | MIT |
| [Dare-DB](https://dbdb.io/db/dare-db) | Dare-DB (sometimes referred to as "DareDB") is an in-memory DBMS written in Go based on hash tabl... | Key/Value | Italy | 2024 | Hobby, Open Source | Go | MIT |
| [dashDB](https://dbdb.io/db/dashdb) | dashDB is a cloud-based data warehousing service based on IBM DB2. | Relational | United States of America | 2014 | Commercial | | Proprietary |
| [Databend](https://dbdb.io/db/databend) | Databend is distributed SQL execution engine for shared-disk storage. | Relational | China | 2020 | Commercial, Open Source | Rust | Apache v2 |
| [DataBlitz](https://dbdb.io/db/datablitz) | | | United States of America | 1993 | Industrial Research | | Proprietary |
| [DataEase](https://dbdb.io/db/dataease) | | Relational | United States of America | 1981 | Commercial | | |
| [DataFusion](https://dbdb.io/db/datafusion) | DataFusion is an extensible framework for planning and executing SQL queries. | Relational | United States of America | 2016 | Open Source | Rust | Apache v2 |
| [Datahike](https://dbdb.io/db/datahike) | Datahike is a Datalog DBMS designed to be similar to [Datomic](/db/datomic). | | Germany | 2018 | Open Source | Clojure | Eclipse Public License |
| [Datalevin](https://dbdb.io/db/datalevin) | Datalevin is a Datalog DBMS written in Clojure. It started out as a port of Datascript using LMDB. | Document / XML | United States of America | 2020 | Hobby, Open Source | Clojure | Eclipse Public License |
| [DATAllegro](https://dbdb.io/db/datallegro) | DATAllegro was a data warehouse appliance based on Ingres. | Relational | United States of America | 2003 | Commercial | | Proprietary |
| [Datameer](https://dbdb.io/db/datameer) | | | United States of America | 2009 | Commercial | | |
| [Datascope](https://dbdb.io/db/datascope) | Datascope is a relational database system in which tables are represented by fixed-format files. ... | Relational | United States of America | 1996 | Academic, Commercial | | |
| [DataScript](https://dbdb.io/db/datascript) | DataScript is an immutable in-memory database and Datalog query engine in Clojure and ClojureScript. | Key/Value | Russia | 2014 | Open Source | Clojure | Eclipse Public License |
| [DataStax](https://dbdb.io/db/datastax) | | | United States of America | 2010 | Commercial | | Proprietary |
| [Dataupia](https://dbdb.io/db/dataupia) | Dataupia was a relational data warehouse appliance that was compatible with SQL Server and Oracle. | Relational | United States of America | 2005 | Commercial | | Proprietary |
| [Datomic](https://dbdb.io/db/datomic) | Datomic is a proprietary database management system. It is an operational DBMS, in other words, i... | Key/Value | United States of America | 2012 | Commercial | Clojure | Proprietary |
| [Db2](https://dbdb.io/db/db2) | IBM Db2 is a relational database management system that is focused on transactional and warehousi... | Relational, Document / XML | United States of America | 1983 | Commercial | C, C++ | Proprietary |
| [DB4IoT](https://dbdb.io/db/db4iot) | DB4IoT is a time-series geospatial database-as-a-service. | Document / XML | United States of America | 2016 | Commercial | | Proprietary |
| [db4o](https://dbdb.io/db/db4o) | db4o ("database for objects") was an embeddable open-source object DBMS for Java and .NET environ... | Object-Oriented | United States of America | 2000 | Commercial, Open Source | | GPL v2, Proprietary |
| [DB5](https://dbdb.io/db/db5) | DB5 (sometimes referred to as "Vector5db") is an embedded vector DBMS that supports nearest-neigh... | Document / XML, Vector | Poland | 2023 | Open Source | TypeScript | MIT |
| [dBASE](https://dbdb.io/db/dbase) | dBase is one of the first DBMSs for microcomputers. | Relational | United States of America | 1979 | Commercial | Assembly, C | Proprietary |
| [dbeel](https://dbdb.io/db/dbeel) | dbeel is a hobby project to build a document-oriented DBMS in Rust. | Document / XML | Israel | 2023 | Hobby, Open Source | Rust | Apache v2 |
| [DBIX](https://dbdb.io/db/dbix) | DBIX is a full-featured, multi-user SQL database server for Windows 3.x/NT/95 and Unix environments. | | United States of America | 1996 | Commercial | | |
| [DBMaker](https://dbdb.io/db/dbmaker) | DBMaker is an ANSI SQL database that fully integrates into COBOL. | Relational | Taiwan | 1994 | Commercial | | |
| [DBMS-20](https://dbdb.io/db/dbms-20) | DBMS-20 was a network data model DBMS build by DEC for [TOPS-20](https://en.wikipedia.org/wiki/TO... | Network | United States of America | | Commercial | | Proprietary |
| [DBOMP](https://dbdb.io/db/dbomp) | DBOMP ("Database Organization and Maintenance Processor") was an early hierarchical database syst... | Hierarchical | United States of America | 1968 | Commercial | | Proprietary |
| [DBreeze](https://dbdb.io/db/dbreeze) | DBreeze is a C# multi-model NoSQL DBMS. | Key/Value, Document / XML | Germany | 2012 | Open Source | C# | BSD |
| [DBx1000](https://dbdb.io/db/dbx1000) | DBx1000 is an experimental single-node OLTP DBMS designed to evaluate concurrency control protoco... | Relational | United States of America | 2014 | Academic, Open Source | Assembly, C++ | ISC License |
| [DeepDB](https://dbdb.io/db/deepdb) | DeepDB (also sometimes called DeepSQL near the end of the project) was a proprietary MySQL storag... | Relational | United States of America | 2010 | Commercial, Open Source | C++ | AGPL v3, Proprietary |
| [DefraDB](https://dbdb.io/db/defradb) | DefraDB is a document-oriented database based on CRDTs. | Document / XML | Canada | 2019 | Commercial, Open Source | Go | Business Source License |
| [DegDB](https://dbdb.io/db/degdb) | DegDB ("Distributed Economic Graph Database") is a graph database management system where every r... | Graph | Canada | 2015 | Open Source | Go | MIT |
| [Delta Lake](https://dbdb.io/db/delta-lake) | Delta Lake is an open-source storage layer for big data workloads. It provides ACID transactions ... | Column Family / Wide-Column | United States of America | 2019 | Commercial, Open Source | Scala | Apache v2 |
| [DensoDB](https://dbdb.io/db/densodb) | DensoDB (DotNet NoSQL DataBase) is NoSQL document database written for .Net environment. | Document / XML | Italy | 2012 | Open Source | C# | |
| [Derby](https://dbdb.io/db/derby) | Derby is a lightweight embedded relational database implemented completely in Java. It is an embe... | Relational | United States of America | 1997 | Open Source | Java | Apache v2 |
| [DeveelDB](https://dbdb.io/db/deveeldb) | DeveelDB is an embedded relational DBMS for .NET/Mono frameworks. | Relational | Norway | 2009 | Open Source | | Apache v2 |
| [DeviceSQL](https://dbdb.io/db/devicesql) | DeviceSQL is low-footprint relational DBMS designed for embedded devices. | Relational | United States of America | 1998 | Commercial | C | Proprietary |
| [DGraph](https://dbdb.io/db/dgraph) | Dgraph is a distributed graph database that supports GraphQL. It emphasizes concurrency in distri... | Graph | United States of America | 2015 | Commercial, Open Source | Go | Apache v2 |
| [DiceDB](https://dbdb.io/db/dicedb) | DiceDB is an in-memory, multi-threaded key-value DBMS that supports the Redis protocol. | Key/Value | India | 2022 | Hobby, Open Source | | Business Source License |
| [DiggyDB](https://dbdb.io/db/diggydb) | DiggyDB is a proof-of-concept document-oriented DBMS stores data in DNS TXT records. | Document / XML | United Kingdom | 2021 | Hobby | JavaScript | |
| [DIRECT](https://dbdb.io/db/direct) | | | United States of America | 1978 | Academic | | |
| [DittoBitto](https://dbdb.io/db/dittobitto) | DittoBitto is a multi-user relational DBMS based off of the Microsoft Access file format. | Relational | South Korea | 2001 | Commercial | | Proprietary |
| [Djondb](https://dbdb.io/db/djondb) | Djondb is a document-oriented DBMS from Colombia. | Document / XML | Colombia | 2012 | Commercial | | |
| [DMSII](https://dbdb.io/db/dmsii) | The Unisys Data Management System II (DMSII) is a network-model DBMS created by the Burroughs Cor... | Network | United States of America | 1972 | Commercial | | Proprietary |
| [Dnaerys](https://dbdb.io/db/dnaerys) | Dnaerys is a distributed in-memory DBMS designed to store genetic variations and execute algorith... | | Australia | | Academic, Commercial | Scala | Proprietary |
| [DocumentDB](https://dbdb.io/db/documentdb) | Amazon DocumentDB is a document database service that supports MongoDB workloads. | Document / XML | United States of America | 2019 | Commercial | | Proprietary |
| [DolphinDB](https://dbdb.io/db/dolphindb) | DolphinDB is a time-series and analytics database management system. | Relational | China | 2018 | Commercial | C++ | Proprietary |
| [Dolt](https://dbdb.io/db/dolt) | Dolt is a single-node and embedded DBMS that incorporates Git-style versioning as a first-class e... | Relational | United States of America | 2018 | Open Source | Go | Apache v2 |
| [Doris](https://dbdb.io/db/doris) | Doris is a parallel SQL data warehouse developed by Baidu. | Relational | China | 2017 | Open Source | C++ | Apache v2 |
| [Doxa](https://dbdb.io/db/doxa) | Doxa is an in-memory document-oriented DBMS. | Document / XML | Poland | 2021 | Hobby, Open Source | Clojure | Public Domain |
| [Dqlite](https://dbdb.io/db/dqlite) | Dqlite ("distributed SQLite") is a portable C library that provides a shared-nothing DBMS. It use... | Relational | Italy | 2017 | Open Source | C | Apache v2 |
| [Dragonfly](https://dbdb.io/db/dragonfly) | Dragonfly is an in-memory key-value store designed to be a multi-threaded version of Redis. | Key/Value | Israel | 2021 | Commercial, Open Source | C++ | Business Source License |
| [Dremio](https://dbdb.io/db/dremio) | Dremio is a distributed OLAP system inspired by Google's Dremel / BigQuery system. | Relational | United States of America | 2015 | Commercial, Open Source | Java | Apache v2 |
| [DriftDB](https://dbdb.io/db/driftdb) | DriftDB is a PostgreSQL-compatible DBMS that supports time-travel queries on an append-only, immu... | Relational | United States of America | 2025 | Hobby, Open Source | Rust | MIT |
| [Drill](https://dbdb.io/db/drill) | Drill is a database system designed for Big Data exploration. It is an open-source, distributed S... | Column Family / Wide-Column | United States of America | 2012 | Open Source | Java | Apache v2 |
| [Drizzle](https://dbdb.io/db/drizzle) | Drizzle was a fork of MySQL that has now since been abandoned. | Relational | United States of America | 2008 | Open Source | C++ | BSD, GPL v2, GPL v3 |
| [Druid](https://dbdb.io/db/druid) | Apache Druid is an open-source distributed real-time analytics database designed for business int... | Column Family / Wide-Column | United States of America | 2011 | Open Source | Java | Apache v2 |
| [DuckDB](https://dbdb.io/db/duckdb) | DuckDB is a relational embeddable analytical DBMS that focuses on supporting analytical query wor... | Relational | Netherlands | 2018 | Academic, Open Source | C++ | MIT |
| [DuctileDB](https://dbdb.io/db/ductiledb) | DuctileDB is a graph-oriented DBMS built on top HBase. | Graph | Germany | 2015 | Open Source | Java | Apache v2 |
| [DyBASE](https://dbdb.io/db/dybase) | DyBASE is a object-oriented embedded DBMS for languages with dynamic type checking. | Object-Oriented | Russia | | Open Source | C++ | |
| [Dydra](https://dbdb.io/db/dydra) | Dydra is a cloud-hosted graph database service. | Triplestore / RDF | Germany | 2010 | Commercial | | Proprietary |
| [DynamoDB](https://dbdb.io/db/dynamodb) | DynamoDB is a managed NoSQL database service provided by Amazon Web Services. As it is managed by... | Key/Value, Document / XML | United States of America | 2012 | Commercial | Java | Proprietary |
| [DynomiteDB](https://dbdb.io/db/dynomitedb) | | | United States of America | 2012 | Open Source | C | Apache v2 |
## E
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [Earthstar](https://dbdb.io/db/earthstar) | Earthstar is a peer-to-peer (P2P) document-oriented database. | Document / XML | United States of America | 2020 | Academic, Open Source | TypeScript | LGPL v3 |
| [EaseDB](https://dbdb.io/db/easedb) | EaseDB is a small database system for storing hierarchical data with a REST interface. | Document / XML | Russia | 2013 | Open Source | Ruby | MIT |
| [EasyDB](https://dbdb.io/db/easydb) | EasyDB is an serverless ephemeral database-as-a-service where databases are dropped after a certa... | Document / XML | United States of America | 2019 | Commercial | | Proprietary |
| [EchoDB](https://dbdb.io/db/echodb) | EchoDB is an in-memory, multi-versioned key-value embedded DBMS. | Key/Value | United Kingdom | 2021 | Open Source | Rust | Apache v2 |
| [EcoDB](https://dbdb.io/db/ecodb) | EcoDB is a document database system with a REST API. | Document / XML | Canada | 2018 | Commercial | | Proprietary |
| [EdgelessDB](https://dbdb.io/db/edgelessdb) | EdgelessDB is a MySQL-compatible DBMS designed to run inside Intel's SGX secure enclave. It is a ... | Relational | Germany | 2021 | Commercial, Open Source | | GPL v2 |
| [Edis](https://dbdb.io/db/edis) | Edis is an Erlang re-implementation of Redis. It uses LevelDB as its backing data store. | Key/Value | United States of America | 2010 | Hobby, Open Source | Erlang | |
| [EffiProz](https://dbdb.io/db/effiproz) | EffiProz is an embedded DBMS written in C#. It supports a SQL dialect that is similar to HSQLDB. | Relational | United States of America | | Commercial, Open Source | C# | |
| [Ehcache](https://dbdb.io/db/ehcache) | Ehcache is an open source Java distributed cache for general purpose caching. | Key/Value | United States of America | 2003 | Open Source | Java | Apache v2 |
| [EinsteinDB](https://dbdb.io/db/einsteindb) | EinsteinDB is a key-value store DBMS that supports partially ordered events. | Key/Value | United States of America | 2019 | Open Source | Rust | |
| [EJDB](https://dbdb.io/db/ejdb) | EJDB2 is an embeddable JSON database engine | Key/Value, Document / XML | Russia | 2012 | Open Source | C | MIT |
| [ekoDB](https://dbdb.io/db/ekodb) | ekoDB is a hosted document-oriented DBMS. | Document / XML | United States of America | 2024 | Commercial | Rust | Proprietary |
| [Elara DB](https://dbdb.io/db/elara-db) | Elara DB is a key-value embedded DBMS written in Python. | Key/Value | India | 2021 | Hobby, Open Source | Python | BSD |
| [ElaSQL](https://dbdb.io/db/elasql) | ElaSQL is a distributed relational experimental DBMS. | Relational | Taiwan | 2016 | Academic, Open Source | Java | Apache v2 |
| [Elasticsearch](https://dbdb.io/db/elasticsearch) | Elasticsearch is an open-source full-text search and analytics engine based on Lucene. A few samp... | Document / XML | United States of America | 2004 | Open Source | Java | Apache v2 |
| [ElephantDB](https://dbdb.io/db/elephantdb) | ElephantDB is a database that provides an API for reading key/value data from Hadoop. ElephantDB ... | Key/Value | United States of America | 2011 | Open Source | Clojure | BSD |
| [ElevateDB](https://dbdb.io/db/elevatedb) | ElevateDB is a database application that can be integrated with various usages. One user or numer... | Relational | United States of America | 2006 | Commercial | SQL | Proprietary |
| [Elevator](https://dbdb.io/db/elevator) | Elevator is an open-source, on-disk key-value store. | Key/Value | Germany | 2012 | Open Source | | MIT |
| [EliasDB](https://dbdb.io/db/eliasdb) | EliasDB is a lightweight graph-based database written in Go. | Graph | United Kingdom | 2016 | Open Source | Go | Mozilla Public License |
| [Elliptics](https://dbdb.io/db/elliptics) | Elliptics is a fault-tolerant distributed key/value (no-relational) database system. The core sto... | Key/Value | Russia | 2009 | Commercial, Open Source | C++, Python | LGPL v3 |
| [Eloquera](https://dbdb.io/db/eloquera) | Eloquera Database is a pure .NET object database. | Object-Oriented | Australia | 2008 | Commercial | C# | Proprietary |
| [Empress](https://dbdb.io/db/empress) | Empress is an embedded relational DBMS that supports SQL. | Relational | Canada | 1979 | Commercial | | Proprietary |
| [Encompass](https://dbdb.io/db/encompass) | Tandem's initial database support was only for hierarchical, non-relational databases via the ENS... | Relational | United States of America | 1981 | Commercial | | |
| [Endatabas](https://dbdb.io/db/endatabas) | Endatabas is a columnar DBMS that supports SQL. | Relational, Document / XML | Sweden | 2023 | Commercial, Open Source | Lisp, Rust | AGPL v3 |
| [Endeca](https://dbdb.io/db/endeca) | Endeca is a document-oriented DBMS designed for analytical workloads. | Document / XML | United States of America | 1999 | Commercial | | Proprietary |
| [Engula](https://dbdb.io/db/engula) | Engula is a distributed key-value DBMS. | Key/Value | China | 2022 | Hobby, Open Source | Rust | Apache v2 |
| [EnnoDB](https://dbdb.io/db/ennodb) | EnnoDB was a key/value NoSQL database designed to run on a web server. | Key/Value | Norway | 2012 | Hobby, Open Source | C | ISC License |
| [Epsilla](https://dbdb.io/db/epsilla) | Epsilla is vector DBMS designed to support LLMs. | Array / Matrix | United States of America | 2023 | Commercial, Open Source | C++ | GPL v3 |
| [EraDB](https://dbdb.io/db/eradb) | EraDB is a timeseries DBMS that supports SQL on top of document databases. | Document / XML | United States of America | 2019 | Commercial | Rust | Proprietary |
| [EsgynDB](https://dbdb.io/db/esgyndb) | EsgynDB is a hybrid transactional database management system built on Apache Trafodion. It is a d... | Relational | United States of America | 2015 | Commercial | C++, Java | |
| [Espresso](https://dbdb.io/db/espresso) | Espresso is an internal distributed document-oriented database management system written by Linke... | Document / XML | United States of America | 2011 | Internal / Non-Public | Java | |
| [Essbase](https://dbdb.io/db/essbase) | Essbase ("extended spreadsheet database") is a multidimensional database management system that p... | Array / Matrix | United States of America | 1992 | Commercial | | Proprietary |
| [Essentia](https://dbdb.io/db/essentia) | Essentia was a database management system from Argentina designed to support desktop applications. | Relational, Object-Oriented | Argentina | | Commercial | | Proprietary |
| [etcd](https://dbdb.io/db/etcd) | etcd is a distributed key-value store which is highly available, strongly consistent, and watchab... | Key/Value | United States of America | 2013 | Open Source | Go | Apache v2 |
| [EuclidesDB](https://dbdb.io/db/euclidesdb) | EuclidesDB is a multi-model machine learning feature DBMS designed to interoperate with PyTorch a... | Array / Matrix | Portugal | 2018 | Open Source | C++ | Apache v2 |
| [EuclidOLAP](https://dbdb.io/db/euclidolap) | EuclidOLAP is an in-memory multi-dimensional database management system for data cubes. | Array / Matrix | China | 2022 | Hobby, Open Source | C | Apache v2 |
| [Eva](https://dbdb.io/db/eva) | Eva is a distributed DBMS with an entity-attribute-value data-model that is time-aware, accumulat... | Entity-Attribute-Value | Netherlands | | | Clojure | Eclipse Public License |
| [EVA DB](https://dbdb.io/db/eva-db) | EVA DB is a relational DBMS designed to operate on both structured (tables, feature vectors) and ... | Relational | United States of America | 2018 | Academic, Open Source | Python | Apache v2 |
| [EVCache](https://dbdb.io/db/evcache) | EVCache is a distributed in-memory data store based on Memcached. | Key/Value | United States of America | 2012 | Open Source | | Apache v2 |
| [Event Store](https://dbdb.io/db/event-store) | Event Store is an open-source, functional database designed for complex event processing workloads. | | United Kingdom | 2012 | Commercial, Open Source | C#, C++, JavaScript | BSD |
| [EventQL](https://dbdb.io/db/eventql) | EventQL is a distributed, column-oriented database built for large-scale event collection and ana... | Relational | Germany | 2014 | Commercial, Open Source | C++ | AGPL v3 |
| [EventSourcingDB](https://dbdb.io/db/eventsourcingdb) | EventSourcingDB is an cloud-hosted DBMS that models data as immutable, append-only log of events. | Document / XML | Germany | 2022 | Commercial | Go | Proprietary |
| [evitaDB](https://dbdb.io/db/evitadb) | evitaDB is a DBMS designed specifically for online storefront and catalog applications. | Document / XML | Czechia | 2020 | Commercial, Open Source | Java | Business Source License |
| [Exasol](https://dbdb.io/db/exasol) | | Relational | Germany | 2000 | Commercial | | Proprietary |
| [eXist-db](https://dbdb.io/db/exist-db) | eXist-db is an open-source XML DBMS. | Document / XML | Germany | 2000 | Commercial, Open Source | Java | LGPL v2 |
| [Exorbyte](https://dbdb.io/db/exorbyte) | | | Germany | 2000 | Commercial | | Proprietary |
| [Express](https://dbdb.io/db/express) | Oracle Express was a multi-dimensional DBMS designed for building OLAP applications. It was avail... | Array / Matrix | United States of America | 1970 | Commercial | | Proprietary |
| [Extensible Storage Engine](https://dbdb.io/db/extensible-storage-engine) | Extensible Storage Engine (ESE) is an embedded key-value ISAM DBMS used in various Microsoft prod... | Key/Value | United States of America | 1994 | Commercial, Open Source | C++ | MIT |
| [eXtremeDB](https://dbdb.io/db/extremedb) | eXtremeDB is a DBMS that supports both on-disk and in-memory databases. There are multiple editio... | Column Family / Wide-Column, Relational, Key/Value, Entity-Relationship | United States of America | 2001 | Commercial | C, C++ | Proprietary |
| [EyeDB](https://dbdb.io/db/eyedb) | EyeDB is an object-oriented DBMS written for Java and C++ applications. | Object-Oriented | France | 1992 | Academic, Open Source | C++ | LGPL v2 |
| [eyros](https://dbdb.io/db/eyros) | eyros is a multi-dimensional interval DBMS designed for geospatial and time-series databases. | Array / Matrix | United States of America | 2018 | Open Source | Rust | Parity Public License |
## F
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [FairCom DB](https://dbdb.io/db/faircom-db) | FairCom DB is an embedded key-value store DBMS engine. | | United States of America | 1984 | Commercial | C | Proprietary |
| [Falcon](https://dbdb.io/db/falcon) | Falcon was a transactional storage engine being developed for the MySQL relational database manag... | | United States of America | 2006 | Commercial, Open Source | | |
| [FalkorDB](https://dbdb.io/db/falkordb) | FalkorDB is a property graph DBMS that runs on top of Redis. It uses GraphBLAS for its sparse adj... | Graph | Israel | 2023 | Commercial, Open Source | C | Server Side Public License |
| [Fallen-8](https://dbdb.io/db/fallen-8) | Fallen-8 is an in-memory graph DBMS implemented in C#. | Graph | Germany | 2011 | Hobby, Open Source | C# | MIT |
| [FastDB](https://dbdb.io/db/fastdb) | | Relational | Russia | 2011 | Open Source | C++ | |
| [FASTER](https://dbdb.io/db/faster) | FASTER is a embedded transactional key-value storage manager from Microsoft. | Key/Value | United States of America | 2018 | Commercial, Open Source | C#, C++ | MIT |
| [FastObjects](https://dbdb.io/db/fastobjects) | FastObjects is an object-oriented database management system designed to store C++ and Java objec... | Object-Oriented | Germany | 1993 | Commercial | C++ | Proprietary |
| [FatDB](https://dbdb.io/db/fatdb) | | | United States of America | 2012 | Commercial | C# | |
| [FathomDB](https://dbdb.io/db/fathomdb) | FathomDB was a relational database-as-a-service (based on MySQL) that supported Amazon and Racksp... | | United States of America | 2009 | Commercial | | |
| [FaunaDB](https://dbdb.io/db/faunadb) | FaunaDB is a cloud-native OLTP database with distributed ACID transactions using the Calvin proto... | Relational, Key/Value, Document / XML, Graph | United States of America | 2012 | Commercial | Scala | Proprietary |
| [FBase](https://dbdb.io/db/fbase) | FBase is a time-series columnar DBMS written in Java. | Relational | Russia | 2022 | Hobby | Java | Apache v2 |
| [FeatureBase](https://dbdb.io/db/featurebase) | FeatureBase is a relational DBMS designed for automated featured extraction for analytical worklo... | Relational | United States of America | 2017 | Open Source | Go | Apache v2 |
| [FeatureForm](https://dbdb.io/db/featureform) | Embeddinghub is a vector DBMS designed for performing nearest neighbor searches. | Vector | United States of America | 2020 | Commercial, Open Source | Go | Mozilla Public License |
| [FerretDB](https://dbdb.io/db/ferretdb) | FerretDB is a document-oriented query middleware on top of PostgreSQL. | Document / XML | United States of America | 2021 | Open Source | Go | |
| [FileDb](https://dbdb.io/db/filedb-dotnet) | FileDb was a embedded relational DBMS for for .NET, Silverlight, and Windows Phone applications. | Relational | Australia | 2011 | Commercial, Open Source | C# | Mozilla Public License |
| [FileDB](https://dbdb.io/db/filedb) | FileDB is a lightweight C# library to store, retrieve, and delete named blobs using a single arch... | Key/Value | Brazil | 2010 | Hobby, Open Source | C# | MIT |
| [FileMaker](https://dbdb.io/db/filemaker) | FileMaker is a proprietary relational database application which can be used in a cross-platform ... | Relational | United States of America | 1985 | Commercial | | Proprietary |
| [FiloDB](https://dbdb.io/db/filodb) | FiloDB is an open-source distributed, versioned, and columnar analytical database designed for mo... | | United States of America | 2015 | Open Source | Scala | Apache v2 |
| [FinchDB](https://dbdb.io/db/finchdb) | FinchDB is a proprietary in-memory, distributed document-oriented DBMS. | Document / XML | United States of America | 2015 | Commercial | | Proprietary |
| [FineDB](https://dbdb.io/db/finedb) | FineDB is a multi-threaded NoSQL DBMS written in C, founded by Amaury Bouchard in 2013. It is bas... | Key/Value | France | 2013 | Hobby, Open Source | C | Apache v2 |
| [Firebase](https://dbdb.io/db/firebase) | The Firebase Realtime Database is a cloud-hosted NoSQL DBMS. | Document / XML | United States of America | 2011 | Commercial | | Proprietary |
| [Firebird](https://dbdb.io/db/firebird) | Firebird is a free, open-source, SQL relational database management system based on the open sour... | Relational | United States of America | 2000 | Open Source | C, C++ | Mozilla Public License |
| [Firebolt](https://dbdb.io/db/firebolt) | Firebolt is a cloud-based data warehouse designed for analytical workloads. | Relational | Israel | 2020 | Commercial | | Proprietary |
| [Fireproof](https://dbdb.io/db/fireproof) | Fireproof is an embedded document-oriented database based on CRDTs and IPFS. It is designed for J... | Document / XML | United Kingdom | 2022 | Commercial, Open Source | JavaScript | Apache v2 |
| [FirstSQL/J](https://dbdb.io/db/firstsqlj) | FirstSQL/J is an Object-Relational Database Management System (ORDBMS) written fully in Java. It ... | Object-Relational | United States of America | 2001 | Commercial | Java | Proprietary |
| [Fjall](https://dbdb.io/db/fjall) | Fjall is a log-structured, embedded key-value DBMS written in Rust. | Key/Value | Germany | 2023 | Hobby, Open Source | Rust | Apache v2, MIT |
| [FlashDB](https://dbdb.io/db/flashdb) | FlashDB is an embedded key-value DBMS. | Key/Value | China | 2020 | Hobby, Open Source | C | Apache v2 |
| [FleetDB](https://dbdb.io/db/fleetdb) | FleetDB is an in-memory, document-oriented DBMS. | Document / XML | United States of America | 2009 | Academic, Open Source | Clojure | MIT |
| [FlockDB](https://dbdb.io/db/flockdb) | FlockDB was a distributed, fault-tolerant graph database. | Graph | United States of America | 2010 | Open Source | Scala | Apache v2 |
| [Fluree](https://dbdb.io/db/fluree) | Fluree is a ledger-backed semantic graph database with a cloud-native architecture. | Relational, Document / XML, Graph, Triplestore / RDF | United States of America | 2017 | Commercial, Open Source | Clojure | AGPL v3 |
| [Fongo](https://dbdb.io/db/fongo) | Fongo ("Fake Mongo") is a in-memory re-implementation of MongoDB written in Java. The goal of the... | Document / XML | United States of America | 2012 | Open Source | Java | Apache v2 |
| [ForestDB](https://dbdb.io/db/forestdb) | ForestDB is a single-node key-value storage engine Couchbase server. It addresses the performance... | Key/Value | United States of America | 2013 | Open Source | C++ | Apache v2 |
| [FoundationDB](https://dbdb.io/db/foundationdb) | FoundationDB is a distributed non-relational database that supports ACID transactions and OLTP wo... | Key/Value | United States of America | 2009 | Open Source | C++ | Apache v2 |
| [FoxPro](https://dbdb.io/db/foxpro) | FoxPro was relational database management system for desktop applications. | Relational | United States of America | 1984 | Commercial | C++ | Proprietary |
| [FramerD](https://dbdb.io/db/framerd) | FramerD is a distributed object-oriented DBMS designed to support the maintenance of knowledge ba... | Object-Oriented | United States of America | 1996 | Academic, Open Source | C | GPL v2 |
| [Frigatebird](https://dbdb.io/db/frigatebird) | Frigatebird is an embedded columnar database that implements a push-based Volcano execution model... | Relational | Netherlands | 2025 | Hobby, Open Source | Rust | MIT |
| [FrontBase](https://dbdb.io/db/frontbase) | | Relational | Denmark | 1993 | Commercial | C | Proprietary |
| [FrostDB](https://dbdb.io/db/frostdb) | FrostDB is an embedded columnar DBMS written in Go designed for observability time-series data sets. | Column Family / Wide-Column | United States of America | 2022 | Open Source | Go | Apache v2 |
| [FuelDB](https://dbdb.io/db/fueldb) | FuelDB is a real-time document-oriented database management system designed to run Node.js. | Document / XML | France | 2014 | Open Source | Java | MIT |
| [FusionDB](https://dbdb.io/db/fusiondb) | FusionDB was a document-oriented DBMS that supported XQuery statements. | Document / XML | United Kingdom | 2019 | Commercial | | Proprietary |
## G
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [Gadfly](https://dbdb.io/db/gadfly) | Gadfly is a relational database management system written using Python modules and optional Pytho... | Relational | United States of America | 1994 | Open Source | Python | Python License |
| [Gaffer](https://dbdb.io/db/gaffer) | Gaffer is a ER database written in Java. | Entity-Relationship | United Kingdom | 2016 | Open Source | Java | Apache v2 |
| [Gaia](https://dbdb.io/db/gaia) | Gaia is an in-memory DBMS designed for embedded devices. | Object-Oriented | United States of America | 2020 | Commercial, Open Source | C++ | MIT |
| [Galaxybase](https://dbdb.io/db/galaxybase) | Galaxybase is a distributed graph database system written in Java. | Graph | China | 2013 | Commercial | Java | Proprietary |
| [GAMMA](https://dbdb.io/db/gamma) | | | United States of America | | Academic | | |
| [Garnet](https://dbdb.io/db/garnet) | Garnet is a Redis-compatible key-value store cache developed by Microsoft Research. | Key/Value | United States of America | 2021 | Industrial Research, Open Source | C# | MIT |
| [GaussDB](https://dbdb.io/db/gaussdb) | GaussDB is a distributed DBMS based on Postgres developed by Huawei. | Object-Relational | China | 2011 | Commercial | | Proprietary |
| [GBase](https://dbdb.io/db/gbase) | GBase is a distributed column store DBMS. | | China | 2010 | Commercial | | Proprietary |
| [GDBM](https://dbdb.io/db/gdbm) | GDBM (GNU dbm) is an embedded DBMS library that provides a key/value storage manager using extens... | Key/Value | United States of America | 1990 | Open Source | C | GPL v2 |
| [Gel](https://dbdb.io/db/gel) | Gel is a "graph-relational" database that aims to solve design problems posed by relational model... | Object-Relational | Canada | 2018 | Commercial, Open Source | C, Python, Rust | Apache v2 |
| [GemFire](https://dbdb.io/db/gemfire) | | | United States of America | | Commercial | | |
| [GemStone/S](https://dbdb.io/db/gemstones) | GemStone/S is an object-oriented DBMS designed for Smalltalk applications. | Object-Oriented | United States of America | 1986 | Commercial | Smalltalk | Proprietary |
| [Genesis DB](https://dbdb.io/db/genesis-db) | Genesis DB is a document-oriented DBMS for streaming workloads. | Document / XML | Austria | 2025 | Commercial | Go | Proprietary |
| [GenieDB](https://dbdb.io/db/geniedb) | GenieDB was a cloud-based database-as-a-service for MySQL. | Relational | United States of America | 2008 | Commercial | | Proprietary |
| [Genji](https://dbdb.io/db/genji) | Genji is an embedded DBMS written in Go that supports SQL over document-oriented databases. | Document / XML | United Arab Emirates | 2018 | Open Source | Go | |
| [GenomicsDB](https://dbdb.io/db/genomicsdb) | GenomicsDB is an embedded storage engine for sparse array data, specifically for genomic data. | Array / Matrix | United States of America | 2016 | Industrial Research | C++ | MIT |
| [Geode](https://dbdb.io/db/geode) | Apache Geode is an open-source, in-memory distributed database designed to support transactional ... | Key/Value | United States of America | 2015 | Open Source | Java | Apache v2 |
| [GeoSpock DB](https://dbdb.io/db/geospock-db) | GeoSpock DB is geospatial analytics database build on top of PrestoDB. | Relational | United Kingdom | 2013 | Commercial | | Proprietary |
| [GhostDB](https://dbdb.io/db/ghostdb) | GhostDB is a distributed in-memory key-value DBMS designed for caching. | Key/Value | Ireland | 2020 | Open Source | Go | BSD |
| [GigaBASE](https://dbdb.io/db/gigabase) | GigaBASE is object-relational embedded database engine for C++ applications. It provides SQL-like... | Object-Relational | Russia | | Hobby, Open Source | C++ | |
| [GlareDB](https://dbdb.io/db/glaredb) | GlareDB is a federated database middleware that supports query execution across multiple DBMS and... | Relational | United States of America | 2022 | Commercial, Open Source | Rust | AGPL v3 |
| [GlobalsDB](https://dbdb.io/db/globalsdb) | GlobalsDB was a closed-source NoSQL DBMS written in Java. It supported programming APIs for Java,... | Array / Matrix | United States of America | 2011 | Commercial | Java | Proprietary |
| [Glowdust](https://dbdb.io/db/glowdust) | Glowdust is a database management system based on functions. | Relational | Sweden | 2023 | Hobby, Open Source | Rust | GPL v3 |
| [Gnocchi](https://dbdb.io/db/gnocchi) | Gnocchi is an open-source time series database service for the OpenStack platform. It supports st... | Relational | France | 2014 | Open Source | Python | Apache v2 |
| [GNU SQL Server](https://dbdb.io/db/gnu-sql-server) | Portable multiuser relational database management system. It supports the full SQL89 dialect and ... | Relational | Russia | 1997 | Open Source | C | GPL v2 |
| [GoatDB](https://dbdb.io/db/goatdb) | GoatDB is an embedded document-oriented DBMS designed for JavaScript environments. | Document / XML | Israel | 2024 | Open Source | TypeScript | Apache v2 |
| [GOLD STAR](https://dbdb.io/db/gold-star) | | | United States of America | 1970 | Academic | | |
| [Goldilocks](https://dbdb.io/db/goldilocks) | Goldilocks is an in-memory relational DBMS from South Korea. | Relational | South Korea | 2010 | Commercial | | Proprietary |
| [GOODS](https://dbdb.io/db/goods) | GOODS ("Generic Object Oriented Database System") is an object-oriented distributed DBMS using an... | Object-Oriented | Russia | | Open Source | | MIT |
| [Google F1](https://dbdb.io/db/google-f1) | F1 is a relational distributed transactional database. And it's built on Google's Spanner so that... | Relational | United States of America | 2013 | Commercial | C++ | |
| [GoshawkDB](https://dbdb.io/db/goshawkdb) | GoshawkDB is an object-oriented database management system. | Object-Oriented | United Kingdom | 2015 | Commercial, Open Source | Go | AGPL v3 |
| [GRACE](https://dbdb.io/db/grace) | | | Japan | 1981 | Academic | | |
| [GraphBase](https://dbdb.io/db/graphbase) | | Graph | Australia | | Commercial | | Proprietary |
| [GraphDB](https://dbdb.io/db/graphdb) | GraphDB is a distributed RDF graph database that supports SPARQL queries. It is implemented as a ... | Triplestore / RDF | Bulgaria | 2000 | Commercial | Java | Proprietary |
| [GrapheekDB](https://dbdb.io/db/grapheekdb) | GrapheekDB is a lightweight graph database with support for multiple back-end storage managers. I... | Key/Value, Graph | France | 2014 | Open Source | Python | GPL v3 |
| [GrapheneDB](https://dbdb.io/db/graphenedb) | GrapheneDB is a cloud-based Database-as-a-Service provider for graph databases based on Neo4j. Th... | Graph | Spain | 2012 | Commercial | | Proprietary |
| [Graphik](https://dbdb.io/db/graphik) | Graphik is a document DBMS written in Go. | Document / XML | United States of America | 2020 | Hobby, Open Source | Go | Apache v2 |
| [Graviton](https://dbdb.io/db/graviton) | Graviton Database is an embedded key-value DBMS that supports snapshot versioning. | Key/Value | France | 2020 | Open Source | Go | GPL v3 |
| [GreatSQL](https://dbdb.io/db/greatsql) | GreatSQL (GreatDB) is a fork of Percona's MySQL Server. | Relational | China | 2020 | Commercial, Open Source | C++ | GPL v2 |
| [Greenplum](https://dbdb.io/db/greenplum) | Greenplum is an open-source data warehouse. It uses massive parallel processing to provide large-... | Relational | United States of America | 2003 | Commercial | C | Apache v2, Proprietary |
| [GreptimeDB](https://dbdb.io/db/greptimedb) | GreptimeDB is a distributed time-series DBMS written in Rust. | Relational | China | 2022 | Commercial, Open Source | Rust | Apache v2 |
| [GridDB](https://dbdb.io/db/griddb) | GridDB is a distributed key-value DBMS built by Toshiba. It has Key-Container data model and time... | Key/Value | Japan | 2011 | Commercial, Open Source | C++ | AGPL v3, Apache v2 |
| [GridGain](https://dbdb.io/db/gridgain) | GridGain is the commercial version of Apache Ignite. | Key/Value | United States of America | 2007 | Commercial, Open Source | Java | Apache v2 |
| [Groonga](https://dbdb.io/db/groonga) | Groonga is a column-oriented DBMS with a full-text search index. | | Japan | 2009 | Commercial | C | LGPL v2 |
| [GT.M](https://dbdb.io/db/gtm) | | Key/Value | United States of America | 1986 | Commercial | | Proprietary |
| [GUN](https://dbdb.io/db/gun) | Gun is an open-source and realtime, decentralized, offline-first, graph database engine written i... | Graph | United States of America | 2014 | Commercial, Open Source | JavaScript | Apache v2 |
## H
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [H-Store](https://dbdb.io/db/h-store) | H-Store was an experimental database management system designed for on-line transaction processin... | Relational | United States of America | 2006 | Academic, Open Source | C++, Java | BSD, GPL v3 |
| [H2](https://dbdb.io/db/h2) | H2 ("Hypersonic 2") is an open-source lightweight relational database management system implement... | Relational | Switzerland | 2004 | Open Source | Java | Eclipse Public License, Mozilla Public License |
| [Hadapt](https://dbdb.io/db/hadapt) | | | United States of America | 2009 | Commercial | Java | |
| [Hadoop](https://dbdb.io/db/hadoop) | Hadoop is a compute and storage framework for executing queries over shared-disk storage using th... | | United States of America | 2006 | Open Source | Java | Apache v2 |
| [HailDB](https://dbdb.io/db/haildb) | HailDB was a fork of MySQL's InnoDB storage engine to provide it as a shared library with NoSQL A... | Key/Value | Australia | 2010 | Open Source | | |
| [Haixun](https://dbdb.io/db/haixun) | | | China | | | | |
| [HaloDB](https://dbdb.io/db/halodb) | HaloDB is an embedded key-value store written in Java. | Key/Value | United States of America | 2017 | Industrial Research, Open Source | Java | Apache v2 |
| [HampusDB](https://dbdb.io/db/hampusdb) | HampusDB (HDB) is a key-value DBMS that combines concepts from filesystems and databases. It prov... | Key/Value | Sweden | 2006 | Hobby, Open Source | C | LGPL v2 |
| [HANA](https://dbdb.io/db/hana) | SAP HANA is a column-oriented, in-memory relational DBMS developed by SAP SE that is designed for... | Column Family / Wide-Column | Germany | 2010 | Commercial | C++ | Proprietary |
| [HanoiDB](https://dbdb.io/db/hanoidb) | HanoiDB is an indexed, key/value storage engine. The primary index is a log-structured merge tree. | Key/Value | Denmark | 2012 | Open Source | Erlang | |
| [HarperDB](https://dbdb.io/db/harperdb) | HarperDB is a serverless document DBMS that supports SQL. | Document / XML | United States of America | 2017 | Commercial | JavaScript | Proprietary |
| [HAWQ](https://dbdb.io/db/hawq) | HAWQ ("Hadoop With Query") is a distributed SQL execution engine that runs on top of Hadoop. | Relational | United States of America | 2015 | Open Source | Java | Apache v2 |
| [HaystackDB](https://dbdb.io/db/haystackdb) | HaystackDB is a vector DBMS based on MMAP storage. | Vector | United States of America | 2024 | Hobby, Open Source | Rust | Apache v2 |
| [Hazelcast](https://dbdb.io/db/hazelcast) | Hazelcast IMDG (In Memory Data Grid) is a Java-based NoSQL open-source distributed in-memory data... | Key/Value | United States of America | 2008 | Commercial, Open Source | Java | Apache v2 |
| [HBase](https://dbdb.io/db/hbase) | HBase is an open source, distributed, non-relational, scalable big data store that runs on top of... | Column Family / Wide-Column | United States of America | 2007 | Open Source | Java | Apache v2 |
| [HeavyDB](https://dbdb.io/db/heavydb) | HeavyDB is a relational, columnar database engine that uses GPUs to accelerate query execution. | Relational | United States of America | 2013 | Commercial, Open Source | C++ | Apache v2 |
| [Hekaton](https://dbdb.io/db/hekaton) | Hekaton is a memory-optimized OLTP engine integrated in SQL Server 2014 and is also known as The ... | Relational | United States of America | 2012 | Commercial | | Proprietary |
| [Helium](https://dbdb.io/db/helium) | Helium is a key-value storage engine that uses kernel bypass methods for reading/writing from SSDs. | Key/Value | United States of America | 2017 | Commercial | | Proprietary |
| [HelixDB](https://dbdb.io/db/helixdb) | HelixDB is a graph-oriented DBMS designed for nearest-neighbor searches over vectors. It uses LMD... | Graph, Vector | United States of America | 2024 | Commercial, Open Source | Rust | GPL v3 |
| [HerdDB](https://dbdb.io/db/herddb) | HerdDB is a distributed SQL DBMS implemented in Java, optimized for primary key read/update acces... | Relational | Italy | 2016 | Open Source | Java | Apache v2 |
| [Heroic](https://dbdb.io/db/heroic) | Heroic is an open-source time-series DBMS built at Spotify to more effectively compute and analyz... | Key/Value | Sweden | 2015 | Open Source | Java | Apache v2 |
| [HexaDB](https://dbdb.io/db/hexadb) | HexaDB is an HTAP system that is compatible with Postgres. | Relational | China | 2023 | Commercial | | Proprietary |
| [HFSQL](https://dbdb.io/db/hfsql) | HFSQL is an embedded relational DBMS for the [WINDEV](https://www.windev.com/windev/index.html) d... | | France | | Commercial | | Proprietary |
| [Hibari](https://dbdb.io/db/hibari) | Hibari is a distributed, ordered key-value, storage engine. | Key/Value | Japan | 2005 | Open Source | Erlang | Apache v2 |
| [HighContext](https://dbdb.io/db/highcontext) | HighContext is a database-as-a-service system that provides a key/value REST API for storing JSON... | Key/Value | United States of America | 2023 | Commercial | Ruby | Proprietary |
| [hipsterDB](https://dbdb.io/db/hipsterdb) | hipsterDB is a toy key/value DBMS project that is designed to only return data as long as that da... | Key/Value | United States of America | 2013 | Hobby, Open Source | Go | |
| [HiRDB](https://dbdb.io/db/hirdb) | HiRDB is a distributed relational DBMS built by Hitachi. | Relational, Document / XML | Japan | 1994 | Commercial | | Proprietary |
| [Histore](https://dbdb.io/db/histore) | Histore is a JavaScript-based key-value storage engine backed by navigation state. | Key/Value | United States of America | 2018 | Hobby, Open Source | JavaScript | Apache v2 |
| [Hive](https://dbdb.io/db/hive) | Apache Hive is a data warehouse software built on top of Hadoop that facilitates reading, writing... | Relational | United States of America | 2010 | Open Source | Java | Apache v2 |
| [Hive (Dart)](https://dbdb.io/db/hive-dart) | Hive is an embedded key-value data store written in Dart. | Key/Value | Germany | 2019 | Open Source | Dart | Apache v2 |
| [HollowDB](https://dbdb.io/db/hollowdb) | HollowDB is a decentralized key-value DBMS using the Arweave blockchain. | Key/Value | Turkey | 2023 | Hobby, Open Source | TypeScript | MIT |
| [HoraeDB](https://dbdb.io/db/horaedb) | HoraeDB is a distributed, schema-less, time-series DBMS. | Relational | China | 2021 | Open Source | Rust | Apache v2 |
| [hss.db](https://dbdb.io/db/hssdb) | hss.db is an embedded object-relational DBMS with a LINQ-based query engine. | Object-Relational | United States of America | 2009 | Commercial | C# | Proprietary |
| [HStreamDB](https://dbdb.io/db/hstreamdb) | HStreamDB is an open source distributed streaming database designed for accessing, storing, and p... | Relational | China | 2020 | Commercial, Open Source | Haskell | BSD |
| [HugeGraph](https://dbdb.io/db/hugegraph) | HugeGraph is a graph database middleware. | Graph | China | 2017 | Open Source | Java | Apache v2 |
| [Husky](https://dbdb.io/db/husky) | Husky is an internal event-store DBMS built by Datadog. | Document / XML | United States of America | 2020 | Internal / Non-Public | Go | Proprietary |
| [Hydra](https://dbdb.io/db/hydra) | Hydra is a data warehouse using PostgreSQL as its frontend and Citus' c-store extension for colum... | Object-Relational | Canada | 2022 | Commercial, Open Source | C | AGPL v3, Apache v2 |
| [HyPer](https://dbdb.io/db/hyper) | The HyPer DBMS is an in-memory database which aims to achieve high performance for both OLTP and ... | Relational | Germany | 2010 | Academic | C++ | Proprietary |
| [HyperDB](https://dbdb.io/db/hyperdb) | HyperDB is a parody vector DBMS written in Python. | Document / XML, Vector | United States of America | 2023 | Hobby, Open Source | Python | MIT |
| [HyperDex](https://dbdb.io/db/hyperdex) | HyperDex is a distributed, searchable, and consistent key-value store. It is mainly developed by ... | Key/Value | United States of America | 2011 | Academic, Open Source | C++ | BSD |
| [HyperGraphDB](https://dbdb.io/db/hypergraphdb) | HyperGraphDB is an extensible open-source graph-based data storage engine. It implements the abil... | Graph | United States of America | 2007 | Open Source | Java | Apache v2 |
| [HyperSQL](https://dbdb.io/db/hypersql) | HSQLDB (**Hyper SQL Database**) is a relational database management system written in Java. | Relational | United States of America | 2001 | Open Source | Java | BSD |
| [Hypertable](https://dbdb.io/db/hypertable) | Hypertable is an open source database modeled after Bigtable, Google's massively scalable databas... | Column Family / Wide-Column | United States of America | 2008 | Commercial, Open Source | C++ | GPL v3 |
| [Hyrise](https://dbdb.io/db/hyrise) | Hyrise is a platform for research and education in the area of relational in-memory databases. Th... | Relational | Germany | 2009 | Academic, Open Source | C++ | MIT |
## I
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [iBoxDB](https://dbdb.io/db/iboxdb) | iBoxDB is a transactional document-oriented NoSQL database management system. | Document / XML | China | 2014 | Commercial | C#, Java | Proprietary |
| [Icecoal](https://dbdb.io/db/icecoal) | Icecoal is an embedded SQL DBMS written in Python. It stores all data as plain-text CSV files. | Relational | India | 2020 | Hobby, Open Source | Python | MIT |
| [IceFireDB](https://dbdb.io/db/icefiredb) | IceFireDB is as distributed NoSQL key/value DBMS that supports the Redis wire protocol. | Key/Value | China | 2021 | Hobby, Open Source | Go | Apache v2 |
| [IDMS](https://dbdb.io/db/idms) | IDMS ("Integrated Database Management System") is a network model (CODASYL) DBMS for mainframes. ... | Network | United States of America | 1973 | Commercial | | Proprietary |
| [Ignite](https://dbdb.io/db/ignite) | Ignite is an in-memory, distributed key-value store which uses a shared-nothing, node-based clust... | Key/Value | United States of America | 2014 | Open Source | Java | Apache v2 |
| [ImmortalDB](https://dbdb.io/db/immortaldb) | ImmortalDB is a key-value store for the browser that stores data in redundant locations (e.g., co... | Key/Value | United States of America | 2018 | Open Source | JavaScript | MIT |
| [Immudb](https://dbdb.io/db/immudb) | immudb is a immutable key-value DBMS written in Go. | Key/Value | United States of America | 2019 | Open Source | Go | Apache v2 |
| [Impala](https://dbdb.io/db/impala) | Impala is an open source SQL engine that offers interactive query processing on data stored in Ap... | Relational | United States of America | 2013 | Commercial, Open Source | C++ | Apache v2 |
| [IMS](https://dbdb.io/db/ims) | | Hierarchical | United States of America | 1968 | Commercial | | Proprietary |
| [Indica](https://dbdb.io/db/indica) | | | Netherlands | 2014 | Commercial | | Proprietary |
| [IndraDB](https://dbdb.io/db/indradb) | IndraDB is a graph database system written in Rust. | Graph | United States of America | 2016 | | Rust | Mozilla Public License |
| [InfiniDB](https://dbdb.io/db/infinidb) | InfiniDB is a column-store DBMS optimized for OLAP workloads. It has a distributed architecture t... | Relational | United States of America | 2000 | Commercial, Open Source | C++ | GPL v2 |
| [Infinispan](https://dbdb.io/db/infinispan) | Infinispan is a distributed cache and key-value NoSQL storage system developed by Red Hat. | Key/Value | United States of America | 2009 | Commercial, Open Source | Java | Apache v2 |
| [InfiniSQL](https://dbdb.io/db/infinisql) | | Relational | United States of America | 2013 | Open Source | C++ | GPL v3 |
| [InfiniteGraph](https://dbdb.io/db/infinitegraph) | InfiniteGraph is a graph-oriented DBMS. | Graph | United States of America | 2010 | Commercial | C++, Java | Proprietary |
| [Infinity](https://dbdb.io/db/infinity) | Infinity is a relational DBMS built that provides vector search, full-text search, and structured... | Relational | China | 2022 | | C++ | Apache v2 |
| [InfinityDB](https://dbdb.io/db/infinitydb) | InfinityDB is an embedded database engine based on a B+Tree written in Java. It supports relation... | Relational, Key/Value, Graph, Hierarchical, Array / Matrix | United States of America | 2002 | Commercial | Java | Proprietary |
| [InfluxDB](https://dbdb.io/db/influxdb) | InfluxDB is an open source time series database built by InfluxData. Optimized for the storage an... | Column Family / Wide-Column | United States of America | 2013 | Commercial, Open Source | Go | MIT |
| [Infobright](https://dbdb.io/db/infobright) | Infobright is a column-oriented analytical DBMS engine for MySQL. The internal architecture of In... | Relational | Canada | 2005 | Commercial | | Proprietary |
| [InfoFrame](https://dbdb.io/db/infoframe) | InfoFrame Elastic Relational Store (IERS) is a distributed database management system for OLTP wo... | Relational | Japan | 2013 | Commercial | | Proprietary |
| [InfoGrid](https://dbdb.io/db/infogrid) | InfoGrid is a web graph database with additional software components that make the development of... | Graph | United States of America | 2008 | Open Source | | AGPL v3 |
| [Informix](https://dbdb.io/db/informix) | Informix is one the original commercial relational DBMS from the 1980s. | Relational | United States of America | 1980 | Commercial | | Proprietary |
| [Ingres](https://dbdb.io/db/ingres) | Ingres is one of the first ever relational database management systems (DBMSs). Actian Corporatio... | Relational | United States of America | 1974 | Academic, Commercial, Open Source | C | Proprietary |
| [InMemory.Net](https://dbdb.io/db/inmemorynet) | InMemory.Net is a database for the .Net environment. It is designed to run as a standalone Window... | Relational | Ireland | 2014 | Commercial | | |
| [InstantDB](https://dbdb.io/db/instantdb) | | Relational | United States of America | 1997 | Commercial | Java | Proprietary |
| [Integrated Data Store](https://dbdb.io/db/integrated-data-store) | | Network | United States of America | 1964 | Commercial | | |
| [InterBase](https://dbdb.io/db/interbase) | InterBase is a light-weight, embeddable, cross-platform Relational Database Management System. In... | Relational | United States of America | 1984 | Commercial | C | Proprietary |
| [IonDB](https://dbdb.io/db/iondb) | IonDB is an key-value DBMS designed for embedded devices. | Key/Value | Canada | 2015 | Academic, Open Source | C | BSD |
| [IoTDB](https://dbdb.io/db/iotdb) | IoTDB is a specialized database management system for time series data generated by a network of ... | Hierarchical | China | 2017 | Academic, Open Source | Java | Apache v2 |
| [IQrypt](https://dbdb.io/db/iqrypt) | IQrypt is built from scratch with privacy and security in mind. It encrypts the data on client co... | Document / XML | Romania | 2015 | Commercial | | Proprietary |
| [Irmin](https://dbdb.io/db/irmin) | Irmin is an embedded database storage library for decentralized databases that are mergeable and ... | Document / XML | France | 2013 | Open Source | Ocaml | ISC License |
| [ITTIA DB SQL](https://dbdb.io/db/ittia-db-sql) | | Relational | United States of America | 2000 | Commercial | | Proprietary |
## J
| Database | Description | Data Models | Country | Year | Type | Written In | License |
|----------|-------------|-------------|---------|------|------|------------|---------|
| [Jackrabbit](https://dbdb.io/db/jackrabbit) | Apache Jackrabbit is an content repository database for the Java platform. | Object-Oriented | Switzerland | 2004 | Open Source | Java | Apache v2 |
| [Jade](https://dbdb.io/db/jade) | | Object-Oriented | New Zealand | 19