Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

awesome-java

A curated list of awesome frameworks, libraries and software for the Java programming language.
https://github.com/pygmalion666/awesome-java

  • Apache Ant - Build process management with XML.
  • Apache Hadoop - Storage and large-scale processing of data sets on clusters of commodity hardware.
  • Apache OpenNLP - Toolkit for common tasks like tokenization.
  • Apache Velocity - A template engine for HTML pages, emails or source code generation.
  • FreeMarker - General templating engine with no heavyweight or opinionated dependencies.
  • GlassFish - Application server and reference implementation for Java EE, sponsored by Oracle.
  • GWT - Toolbox that includes a Java-to-JavaScript compiler for client-side code, XML parser, API for RPC, JUnit integration, internationalization support and widgets for the GUI.
  • Hamcrest - Matchers that, when combined, create flexible expressions of intent.
  • HornetQ - Clear, concise, modular and made for embedding.
  • Java Modeling Language (JML) - Behavioral interface specification language useful for specifying the behavior of code modules. It combines Eiffel's Design by Contract approach with the model-based specification approach of the Larch family of interface specification languages, with some elements of the refinement calculus. Used by several other verification tools.
  • JavaCC - Parser generator with syntactic lookahead.
  • JavaServer Faces - Oracle's open-source implementation of the JSF standard, Mojarra.
  • JavaServer Pages - Common templating for websites with custom tag libraries.
  • JUnit - Common testing framework.
  • Launch4j - Wraps JARs in lightweight and native Windows executables.
  • Quartz - Open-source job scheduler library with Apache 2.0 license.
  • RxJava - Library for composing asynchronous and event-based programs using observable sequences from the JVM.
  • TestNG - Testing framework inspired by JUnit and NUnit, with different functionalities.
  • Trove - High-performance primitive collections.
  • Dozer - Mapper that copies data from one object to another using annotations and API or XML configuration.
  • JMapper - Uses byte code manipulation for lightning-fast mapping. Supports annotations and API or XML configuration.
  • MapStruct - Code generator that simplifies mappings between different bean types, based on a convention-over-configuration approach.
  • ModelMapper - Intelligent object mapping library that automatically maps objects to each other.
  • Orika - JavaBean-mapping framework that recursively copies (among other capabilities) data from one object to another.
  • Selma - Annotation processor-based bean mapper.
  • Apache Maven - Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain.
  • Bazel - Tool from Google that builds code quickly and reliably.
  • Gradle - Incremental builds programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.
  • ASM - All-purpose, low-level bytecode manipulation and analysis.
  • Byte Buddy - Further simplifies bytecode generation with a fluent API.
  • Byteman - Manipulate bytecode at runtime via DSL (rules); mainly for testing/troubleshooting.
  • cglib - Bytecode generation library.
  • Javassist - Tries to simplify bytecode editing.
  • Caffeine - High-performance, near-optimal caching library.
  • Ehcache - Distributed general-purpose cache.
  • Infinispan - Highly concurrent key/value datastore used for caching.
  • Apache Aurora - Mesos framework for long-running services and cron jobs.
  • Apache Mesos - Abstracts CPU, memory, storage, and other compute resources away from machines.
  • Singularity - Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks.
  • Checkstyle - Static analysis of coding conventions and standards.
  • Error Prone - Catches common programming mistakes as compile-time errors.
  • FindBugs - Static analysis of bytecode to find potential bugs.
  • Infer - Modern static analysis tool for verifying the correctness of code.
  • jQAssistant - Static code analysis with Neo4J-based query language.
  • PMD - Source code analysis for finding bad coding practices.
  • Sourcetrail ![c - Visual source code navigator.
  • Spoon - Library for analyzing and transforming Java source code.
  • Clover ![c - Relies on source-code instrumentation instead of bytecode instrumentation.
  • Cobertura - Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics.
  • JaCoCo - Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation.
  • ADT4J - JSR-269 code generator for algebraic data types.
  • Auto - Generates factory, service, and value classes.
  • FreeBuilder - Automatically generates the Builder pattern.
  • Immutables - Annotation processors to generate simple, safe and consistent value objects.
  • JavaPoet - API to generate source files.
  • JHipster - Yeoman source code generator for Spring Boot and AngularJS.
  • Joda-Beans - Small framework that adds queryable properties to Java, enhancing JavaBeans.
  • Lombok - Code generator that aims to reduce verbosity.
  • Airline - Annotation-based framework for parsing Git-like command-line arguments.
  • args4j - Small library to parse command-line arguments.
  • JCommander - Command-line argument-parsing framework with custom types and validation via implementing interfaces.
  • JOpt Simple - Simple parser that uses the POSIX getopt() and GNU getopt_long() syntaxes. Uses a fluent API instead of annotations.
  • picocli - ANSI colors and styles in usage help. Can be included as source to avoid dependency. Annotation-based, POSIX/GNU/any syntax, subcommands, strong typing for both options and positional args.
  • ANTLR - Complex full-featured framework for top-down parsing.
  • JFlex - A lexical analyzer generator.
  • centraldogma - Highly-available version-controlled service configuration repository based on Git, ZooKeeper and HTTP/2.
  • cfg4j - Modern configuration library for distributed apps written in Java.
  • config - Configuration library for JVM languages.
  • ini4j - Provides an API for handling Windows' INI files.
  • KAConf - Annotation-based configuration system for Java and Kotlin.
  • owner - Reduces boilerplate of properties.
  • Choco - Off-the-shelf constraint satisfaction problem solver that uses constraint programming techniques.
  • JaCoP - Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models.
  • OptaPlanner - Business planning and resource scheduling optimization solver.
  • Apache Commons CSV - Provides a simple interface for reading and writing CSV files of various types.
  • jackson-dataformat-csv - Jackson extension for reading and writing CSV.
  • opencsv - Simple CSV parser.
  • Super CSV - Powerful CSV parser with support for Dozer, Joda-Time and Java 8.
  • uniVocity-parsers - One of the fastest and most feature-complete parsers. Also comes with parsers for TSV and fixed-width records.
  • Apache Phoenix - High-performance relational database layer over HBase for low-latency applications.
  • Chronicle Map - Efficient, in-memory (opt. persisted to disk), off-heap key-value store.
  • eXist - A NoSQL document database and application platform.
  • FlexyPool - Brings metrics and failover strategies to the most common connection pooling solutions.
  • Flyway - Simple database migration tool.
  • H2 - Small SQL database notable for its in-memory functionality.
  • HikariCP - High-performance JDBC connection pool.
  • JDBI - Convenient abstraction of JDBC.
  • Jedis - Small client for interaction with Redis, with methods for commands.
  • Jest - Client for the Elasticsearch REST API.
  • jetcd - Client library for etcd.
  • Jinq - Typesafe database queries via symbolic execution of Java 8 Lambdas (on top of JPA or jOOQ).
  • jOOQ - Generates typesafe code based on SQL schema.
  • Liquibase - Database-independent library for tracking, managing and applying database schema changes.
  • MapDB - Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.
  • MariaDB4j - Launcher for MariaDB that requires no installation or external dependencies.
  • OrientDB - Embeddable distributed database written on top of Hazelcast.
  • Presto - Distributed SQL query engine for big data.
  • Querydsl - Typesafe unified queries.
  • Realm - Mobile database to run directly inside phones, tablets or wearables.
  • Redisson - Allows for distributed and scalable data structures on top of a Redis server.
  • requery - A modern, lightweight but powerful object mapping and SQL generator. Easily map to or create databases, or perform queries and updates from any Java-using platform.
  • Speedment - Database access library that utilizes Java 8's Stream API for querying.
  • sql2o - Thin JDBC wrapper that simplifies database access and provides simple mapping of ResultSets to POJOs.
  • Vibur DBCP - JDBC connection pool library with advanced performance monitoring capabilities.
  • Xodus - Highly concurrent transactional schema-less and ACID-compliant embedded database.
  • Apache Avro - Data interchange format with dynamic typing, untagged data, and absence of manually assigned IDs.
  • Apache Orc - Fast and efficient columnar storage format for Hadoop-based workloads.
  • Apache Parquet - Columnar storage format based on assembly algorithms from Google's paper on Dremel.
  • Apache Thrift - Data interchange format that originated at Facebook.
  • Big Queue - A big, fast and persistent queue based on memory-mapped files.
  • Persistent Collection - Persistent and immutable analogue of the Java Collections Framework.
  • Protobuf - Google's data interchange format.
  • SBE - Simple Binary Encoding, one of the fastest message formats around.
  • Tape - A lightning-fast, transactional, file-based FIFO.
  • Wire - Clean, lightweight protocol buffers.
  • Almanac Converter - Simple conversion between different calendar systems.
  • iCal4j - Parse and build iCalendar [RFC 5545](https://tools.ietf.org/html/rfc5545) data models.
  • ThreeTen-Extra - Additional date-time classes that complement those in JDK 8.
  • Time4J - Advanced date and time library.
  • Inversion of Control
  • Apache DeltaSpike - CDI extension framework.
  • Dagger2 - Compile-time injection framework without reflection.
  • Feather - Ultra-lightweight, JSR-330-compliant dependency injection library.
  • Governator - Extensions and utilities that enhance Google Guice.
  • Guice - Lightweight and opinionated framework that completes Dagger.
  • HK2 - Lightweight and dynamic dependency injection framework.
  • AspectJ - Seamless aspect-oriented programming extension.
  • DCEVM - JVM modification that allows unlimited redefinition of loaded classes at runtime.
  • Faux Pas - Library that simplifies error handling by circumventing the issue that none of the functional interfaces in the Java Runtime is allowed by default to throw checked exceptions.
  • HotswapAgent - Unlimited runtime class and resource redefinition.
  • JavaParser - Parse, modify and generate Java code.
  • JavaSymbolSolver - A symbol solver for Java.
  • JRebel ![c - Instantly reloads code and configuration changes without redeploys.
  • NoException - Allows checked exceptions in functional interfaces and converts exceptions to Optional return.
  • Apache Geode - In-memory data management system that provides reliable asynchronous event notifications and guaranteed message delivery.
  • Apache Storm - Realtime computation system.
  • Apache ZooKeeper - Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems.
  • Atomix - Fault-tolerant distributed coordination framework.
  • Axon Framework - Framework for creating CQRS applications.
  • Copycat - Fault-tolerant state machine replication framework.
  • Dropwizard Circuit Breaker - Circuit breaker design pattern for Dropwizard.
  • Failsafe - Simple failure handling with retries and circuit breakers.
  • Hazelcast ![c - Highly scalable in-memory datagrid with a free open-source version.
  • Hystrix - Provides latency and fault tolerance.
  • JGroups - Toolkit for reliable messaging and cluster creation.
  • Orbit - Virtual actors; adds another level of abstraction to traditional actors.
  • Quasar - Lightweight threads and actors for the JVM.
  • resilience4j - Functional fault tolerance library.
  • Zuul - A gateway service that provides dynamic routing, monitoring, resiliency, security, and more.
  • Apache Cassandra - Column-oriented and provides high availability with no single point of failure.
  • Apache HBase - Hadoop database for big data.
  • Druid - Real-time and historical OLAP data store that excels at aggregation and approximation queries.
  • Infinispan - Highly concurrent key-value data store used for caching.
  • OpenTSDB - Scalable and distributed time series database written on top of Apache HBase.
  • OrientDB - Embeddable distributed database written on top of Hazelcast.
  • Bintray ![c - Version control for binaries that handle publishing. Compatible with Maven or Gradle, with a free plan for open-source software as well as several business plans.
  • Boxfuse - Deployment of JVM applications to AWS using the principles of immutable infrastructure.
  • Capsule - Simple and powerful packaging and deployment. A fat JAR on steroids, or a "Docker for Java" that supports JVM-optimized containers.
  • Central Repository - Largest binary component repository available as a free service to the open-source community. Default used by Apache Maven, and available in all other build tools.
  • IzPack - Setup authoring tool for cross-platform deployments.
  • JitPack - Easy-to-use package repository for GitHub. Builds Maven/Gradle projects on demand and publishes ready-to-use packages.
  • Nexus ![c - Binary management with proxy and caching capabilities.
  • packr - Packs JARs, assets and the JVM for native distribution on Windows, Linux and Mac OS X.
  • really-executable-jars-maven-plugin - Maven plugin for making self-executing JARs.
  • Apache POI - Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT).
  • documents4j - API for document format conversion using third-party converters such as MS Word.
  • docx4j - Create and manipulate Microsoft Open XML files.
  • CATG - Concolic unit testing engine. Automatically generates unit tests using formal methods.
  • Checker Framework - Pluggable type systems. Includes nullness types, physical units, immutability types and more.
  • Daikon - Detects likely program invariants and generates JML specs based on those invariants.
  • Java Path Finder (JPF) - JVM formal verification tool containing a model checker and more. Created by NASA.
  • JMLOK 2.0 - Detects inconsistencies between code and JML specification through feedback-directed random tests generation, and suggests a likely cause for each nonconformance detected.
  • KeY - Formal software development tool that aims to integrate design, implementation, formal specification, and formal verification of object-oriented software as seamlessly as possible. Uses JML for specification and symbolic execution for verification.
  • OpenJML - Translates JML specifications into SMT-LIB format and passes the proof problems implied by the program to backend solvers.
  • cyclops-react - Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.
  • derive4j - Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching and morphisms.
  • Fugue - Functional extensions to Guava.
  • Functional Java - Implements numerous basic and advanced programming abstractions that assist composition-oriented development.
  • jOOλ - Extension to Java 8 that aims to fix gaps in lambda by providing numerous missing types and a rich set of sequential Stream API additions.
  • protonpack - Collection of stream utilities.
  • StreamEx - Enhances Java 8 Streams.
  • Vavr - Functional component library that provides persistent data types and functional control structures.
  • jMonkeyEngine - Game engine for modern 3D development.
  • libGDX - All-round cross-platform, high-level framework.
  • LWJGL - Robust framework that abstracts libraries like OpenGL/CL/AL.
  • Apache SIS - Library for developing geospatial applications.
  • Geo - GeoHash utilities in Java.
  • Geotoolkit.org - Library for developing geospatial applications. Built on top of the Apache SIS project.
  • GeoTools - Library that provides tools for geospatial data.
  • GraphHopper - Road-routing engine. Used as a Java library or standalone web service.
  • H2GIS - A spatial extension of the H2 database.
  • Jgeohash - Library for using the GeoHash algorithm.
  • Mapsforge - Map rendering based on OpenStreetMap data.
  • Spatial4j - General-purpose spatial/geospatial library.
  • JavaFX - The successor of Swing.
  • Scene Builder - Visual layout tool for JavaFX applications.
  • SWT - The Standard Widget Toolkit, a graphical widget toolkit.
  • Agrona - Data structures and utility methods that are common in high-performance applications.
  • Disruptor - Inter-thread messaging library.
  • Eclipse Collections - Collections framework inspired by Smalltalk.
  • fastutil - Fast and compact type-specific collections.
  • HPPC - Primitive collections.
  • JCTools - Concurrency tools currently missing from the JDK.
  • Koloboke - Hash sets and hash maps.
  • Async Http Client - Asynchronous HTTP and WebSocket client library.
  • Feign - HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket.
  • OkHttp - HTTP+SPDY client.
  • restQL-core - Microservice query language that fetches information from multiple services.
  • Retrofit - Typesafe REST client.
  • Ribbon - Client-side IPC library that is battle-tested in cloud.
  • Riptide - Client-side response routing for Spring's RestTemplate.
  • JSON-LD - JSON-LD implementation.
  • Siren4J - Library for the Siren specification.
  • Eclipse - Established open-source project with support for lots of plugins and languages.
  • IntelliJ IDEA ![c - Supports many JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector.
  • NetBeans - Provides integration for several Java SE and EE features, from database access to HTML5.
  • Imgscalr - Simple, efficient and hardware-accelerated image-scaling library implemented in pure Java 2D.
  • Tess4J - A JNA wrapper for Tesseract OCR API.
  • Thumbnailator - High-quality thumbnail generation library.
  • TwelveMonkeys - Collection of plugins that extend the number of supported image file formats.
  • ZXing - Multi-format 1D/2D barcode image processing library.
  • Genson - Powerful and easy-to-use Java-to-JSON conversion library.
  • Gson - Serializes objects to JSON and vice versa. Good performance with on-the-fly usage.
  • HikariJSON - High-performance JSON parser, 2x faster than Jackson.
  • Jackson-datatype-money - Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types.
  • Jackson - Similar to GSON, but offers performance gains if you need to instantiate the library more often.
  • JSON-io - Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer.
  • jsoniter - Fast and flexible library with iterator and lazy parsing API.
  • LoganSquare - JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON & Jackson's library.
  • Moshi - Modern JSON library, less opinionated and uses built-in types like List and Map.
  • Yasson - Binding layer between classes and JSON documents similar to JAXB.
  • fastjson - Very fast processor with no additional dependencies and full data binding.
  • Jolt - JSON to JSON transformation tool.
  • JsonPath - Extract data from JSON using XPATH-like syntax.
  • JsonSurfer - Streaming JsonPath processor dedicated to processing big and complicated JSON data.
  • Avian - JVM with both JIT and AOT modes. Includes an iOS port.
  • OpenJ9 - High performance, enterprise calibre, flexibly licensed, openly governed cross platform Java Virtual Machine extending and augmenting the runtime technology components from the Eclipse OMR and OpenJDK project.
  • OpenJDK - Open-source implementation for Linux.
  • ParparVM - VM with non-blocking, concurrent GC for iOS.
  • Zulu OpenJDK 9 - Early-access OpenJDK 9 builds for Windows, Linux, and Mac OS X.
  • Zulu OpenJDK - OpenJDK builds for Windows, Linux, and Mac OS X through Java 8.
  • Apache Log4j 2 - Complete rewrite with a powerful plugin and configuration architecture.
  • Graylog - Open-source aggregator suited for extended role and permission management.
  • Kibana - Analyzes and visualizes log files. Some features require payment.
  • Logback - Robust logging library with interesting configuration options via Groovy.
  • Logbook - Extensible, open-source library for HTTP request and response logging.
  • Logstash - Tool for managing log files.
  • SLF4J - Abstraction layer/simple logging facade.
  • tinylog - Lightweight logging framework with static logger class.
  • Tracer - Call tracing and log correlation in distributed systems.
  • Apache Flink - Fast, reliable, large-scale data processing engine.
  • Apache Mahout - Scalable algorithms focused on collaborative filtering, clustering and classification.
  • Apache Spark - Data analytics cluster-computing framework.
  • DatumBox - Provides several algorithms and pre-trained models for natural language processing.
  • DeepDive - Creates structured information from unstructured data and integrates it into an existing database.
  • Deeplearning4j - Distributed and multi-threaded deep learning library.
  • H2O - Analytics engine for statistics over big data.
  • JSAT - Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution.
  • Oryx 2 - Framework for building real-time, large-scale machine learning applications. Includes end-to-end applications for collaborative filtering, classification, regression, and clustering.
  • Smile - The Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.
  • Weka - Collection of algorithms for data mining tasks ranging from pre-processing to visualization.
  • Aeron - Efficient, reliable, unicast and multicast message transport.
  • Apache ActiveMQ - Message broker that implements JMS and converts synchronous to asynchronous communication.
  • Apache Camel - Glues together different transport APIs via Enterprise Integration Patterns.
  • Apache Kafka - High-throughput distributed messaging system.
  • Hermes - Fast and reliable message broker built on top of Kafka.
  • JeroMQ - Implementation of ZeroMQ.
  • Nakadi - Provides a RESTful API on top of Kafka.
  • RocketMQ - A fast, reliable, and scalable distributed messaging platform.
  • Smack - Cross-platform XMPP client library.
  • Codename One - Cross-platform solution for writing native mobile (iOS, Android, etc.) apps.
  • CQEngine - Ultra-fast, SQL-like queries on Java collections.
  • Design Patterns - Implementation and explanation of the most common design patterns.
  • Failsafe - Simple failure handling with retries and circuit breakers.
  • FF4J - Feature Flags for Java.
  • J2ObjC - Java-to-Objective-C translator for porting Android libraries to iOS.
  • JavaX - Reinventing and extending Java with a focus on simplicity.
  • JBake - Static website generator.
  • JBot - Framework for building chatbots.
  • Jimfs - In-memory file system.
  • Joda-Money - Basic currency and money classes and algorithms not provided by the JDK.
  • JPad - Snippet runner.
  • Lanterna - Easy console text-GUI library, similar to curses.
  • LightAdmin - Pluggable CRUD UI library for rapid application development.
  • Maven Wrapper - Analogue of Gradle Wrapper for Maven, allows build projects without installing maven.
  • Membrane Service Proxy - An open-source, reverse-proxy framework written in Java.
  • Modern Java - A Guide to Java 8 - Popular Java 8 guide.
  • Modernizer - Detect uses of legacy Java APIs.
  • OpenRefine - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases.
  • Polyglot for Maven - Extensions for Maven 3.3.1+ that allows writing the POM model in dialects other than XML.
  • Togglz - Implementation of the Feature Toggles pattern.
  • TypeTools - Tools for resolving generic types.
  • XMLBeam - Processes XML by using annotations or XPath within code.
  • Apollo - Libraries for writing composable microservices.
  • consul-api - Client for the [Consul](https://www.consul.io/) API: a distributed, highly available and datacenter-aware registry/discovery service.
  • Eureka - REST-based service registry for resilient load balancing and failover.
  • Lagom - Framework for creating microservice-based systems.
  • AppDynamics ![c - Performance monitor.
  • Automon - Combines the power of AOP with monitoring and/or logging tools.
  • Glowroot - Open-source Java APM.
  • Instrumental ![c - Real-time Java application performance monitoring. A commercial service with free development accounts.
  • JavaMelody - Performance monitoring and profiling.
  • jmxtrans - Connect to multiple JVMs and query them for their attributes via JMX. Its query language is based on JSON, which allows non-Java programmers to access the JVM attributes. Supports different output writes, including Graphite, Ganglia, and StatsD.
  • Jolokia - JMX over REST.
  • Kamon - Tool for monitoring applications running on the JVM.
  • Metrics - Expose metrics via JMX or HTTP and send them to a database.
  • New Relic ![c - Performance monitor.
  • nudge4j - Remote developer console from the browser for Java 8 via bytecode injection.
  • OverOps ![c - In-production error monitoring and debugging.
  • Pinpoint - Open-source APM tool.
  • Prometheus - Provides a multi-dimensional data model, DSL, autonomous server nodes and much more.
  • SPM ![c - Performance monitor with distributing transaction tracing for JVM apps.
  • Stagemonitor - Open-source performance monitoring and transaction tracing for JVM apps.
  • Sysmon - Lightweight platform monitoring tool for Java VMs.
  • JavaCPP - Provides efficient and easy access to native C++.
  • JNA - Work with native libraries without writing JNI. Also provides interfaces to common system libraries.
  • JNR - Work with native libraries without writing JNI. Also provides interfaces to common system libraries. Same goals as JNA, but faster, and serves as the basis for the upcoming [Project Panama](http://openjdk.java.net/projects/panama/).
  • CogCompNLP - Provides common annotators for plain text input.
  • CoreNLP - Provides a set of fundamental tools for tasks like tagging, named entity recognition, and sentiment analysis.
  • DKPro - Collection of reusable NLP tools for linguistic pre-processing, machine learning, lexical resources, etc.
  • LingPipe - Toolkit for tasks ranging from POS tagging to sentiment analysis.
  • Comsat - Integrates standard Java web-related APIs with Quasar fibers and actors.
  • Finagle - Extensible RPC system for constructing high-concurrency servers. It implements uniform client and server APIs for several protocols, and is protocol-agnostic to simplify implementation of new protocols.
  • Grizzly - NIO framework. Used as a network layer in Glassfish.
  • gRPC - RPC framework based on protobuf and HTTP/2.
  • KryoNet - Provides a clean and simple API for efficient TCP and UDP client/server network communication using NIO and Kryo.
  • MINA - Abstract, event-driven async I/O API for network operations over TCP/IP and UDP/IP via Java NIO.
  • Netty - Framework for building high-performance network applications.
  • Nifty - Implementation of Thrift clients and servers on Netty.
  • Undertow - Web server providing both blocking and non-blocking APIs based on NIO. Used as a network layer in WildFly.
  • urnlib - Represent, parse and encode URNs, as in RFC 2141.
  • Apache Cayenne - Provides a clean, static API for data access. Also includes a GUI Modeler for working with database mappings, and DB reverse engineering and generation.
  • Ebean - Provides simple and fast data access.
  • EclipseLink - Supports a number of persistence standards: JPA, JAXB, JCA and SDO.
  • Hibernate - Robust and widely used, with an active community.
  • MyBatis - Couples objects with stored procedures or SQL statements.
  • SimpleFlatMapper - Simple database and CSV mapper.
  • AWS Elastic Beanstalk ![c - AWS-based, with support for Tomcat and Jetty.
  • AWS Lambda ![c - Serverless computation.
  • Google App Engine ![c - PaaS on Google's infrastructure.
  • Heroku ![c - Abstract computing environments.
  • Jelastic ![c - Supports Tomcat, Jetty, GlassFish, JBoss, TomEE and WildFly.
  • OpenShift Enterprise ![c - On-premise solution.
  • Apache FOP - Creates PDFs from XSL-FO.
  • Apache PDFBox - Toolbox for creating and manipulating PDFs.
  • Dynamic Jasper - Abstraction layer to JasperReports.
  • DynamicReports - Simplifies JasperReports.
  • flyingsaucer - XML/XHTML and CSS 2.1 renderer.
  • iText ![c - Creates PDF files programmatically.
  • JasperReports - Complex reporting engine.
  • fastThread ![c - Analyze and visualize thread dumps with a free cloud-based upload interface.
  • GCeasy ![c - Tool to analyze and visualize GC logs. It provides a free cloud-based upload interface.
  • honest-profiler - A low-overhead, bias-free sampling profiler.
  • jHiccup - Logs and records platform JVM stalls.
  • JITWatch - Analyze the JIT compiler optimisations made by the HotSpot JVM.
  • JMH - a Java harness for building, running, and analysing nano/micro/milli/macro benchmarks written in Java and other languages targeting the JVM.
  • JProfiler ![c - Database profiling for JDBC, JPA and NoSQL, with JEE support.
  • LatencyUtils - Utilities for latency measurement and reporting.
  • XRebel ![c - Real-time profiling for web applications, with an in-browser widget.
  • YourKit Java Profiler ![c - Profiler for any application running on the JVM.
  • CUBA Platform - High-level framework for developing enterprise applications with a rich web interface, based on Spring, EclipseLink and Vaadin.
  • Light-Java - A fast, lightweight and productive microservices framework with built-in [security](https://github.com/networknt/light-oauth2).
  • Orienteer - Open-source business application platform for rapid configuration/development of CRM, ERP, LMS and other applications.
  • Spring - Provides many packages for dependency injection, aspect-oriented programming, security, etc.
  • Akka - Toolkit and runtime for building concurrent, distributed, fault-tolerant and event-driven applications.
  • Reactive Streams - Provides a standard for asynchronous stream processing with non-blocking backpressure.
  • Reactor - Library for building reactive fast-data applications.
  • vert.x - Polyglot event-driven application framework.
  • Dropwizard - Opinionated framework for setting up modern web applications with Jetty, Jackson, Jersey and Metrics.
  • Jersey - JAX-RS reference implementation.
  • Microserver - monolith and pure microservices styles.
  • Rapidoid - A simple, secure and extremely fast framework consisting of an embedded HTTP server, GUI components and dependency injection.
  • rest.li - Framework for building robust, scalable RESTful architectures using typesafe bindings and asynchronous, non-blocking IO with an end-to-end developer workflow that promotes clean practices, uniform interface design and consistent data modeling.
  • RESTEasy - Fully certified and portable implementation of the JAX-RS specification.
  • RestExpress - Thin wrapper on the JBoss Netty HTTP stack that provides scaling and performance.
  • Restlet Framework - Pioneering framework with powerful routing and filtering capabilities, and a unified client and server API.
  • Spark - Sinatra inspired framework.
  • DataMelt - Environment for scientific computation, data analysis and data visualization.
  • Erdos - Modular, light and easy graph framework for theoretic algorithms.
  • GraphStream - Library for modeling and analyzing dynamic graphs.
  • JGraphT - Graph library that provides mathematical graph-theory objects and algorithms.
  • JGraphX - Library for visualizing (mainly Swing) and interacting with node-edge graphs.
  • Mines Java Toolkit - Library for geophysical scientific computation, visualization and digital signal analysis.
  • Morpheus - Provides a versatile two-dimensional memory efficient tabular data structure called a DataFrame to enable efficient in-memory analytics for scientific computing on the JVM.
  • Tablesaw - Includes a data-frame, an embedded column store, and hundreds of methods to transform, summarize, or filter data.
  • Apache Lucene - High-performance, full-featured, cross-platform, text search engine library.
  • Apache Solr - Enterprise search engine optimized for high-volume traffic.
  • Elasticsearch - Distributed, multitenant-capable, full-text search engine with a RESTful web interface and schema-free JSON documents.
  • Apache Shiro - Performs authentication, authorization, cryptography and session management.
  • Bouncy Castle - All-purpose cryptographic library and JCA provider offering a wide range of functions, from basic helpers to PGP/SMIME operations.
  • Cryptomator - Multiplatform, transparent, client-side encryption of files in the cloud.
  • Hdiv - Runtime application that repels application security risks included in the OWASP Top 10, including SQL injection, cross-site scripting, cross-site request forgery, data tampering, and brute force attacks.
  • jjwt - JSON web token for Java and Android.
  • Keycloak - Integrated SSO and IDM for browser apps and RESTful web services.
  • Keyczar - Easy-to-use, safe encryption framework with key versioning.
  • Keywhiz - System for distributing and managing secrets.
  • Nbvcxz - Advanced password strength estimation.
  • OACC - Provides permission-based authorization services.
  • pac4j - Security engine.
  • PicketLink - Umbrella project for security and identity management.
  • Vault - Secures, stores, and tightly controls access to tokens, passwords, certificates, API keys, and other secrets. It handles leasing, key revocation, key rolling, and auditing. Through a unified API, users can access an encrypted Key/Value store and network encryption-as-a-service, or generate AWS IAM/STS credentials, SQL/NoSQL databases, X.509 certificates, SSH credentials, and more.
  • FlatBuffers - Memory-efficient serialization library that can access serialized data without unpacking and parsing it.
  • FST - JDK-compatible, high-performance object graph serialization.
  • Kryo - Fast and efficient object graph serialization framework.
  • MessagePack - Efficient binary serialization format.
  • PHP Serializer - Serializing objects in the PHP serialization format.
  • Apache Tomcat - Robust, all-round server for Servlet and JSP.
  • Apache TomEE - Tomcat plus Java EE.
  • Jetty - Provides a Web server and javax.servlet container, plus support for HTTP/2, WebSocket, OSGi, JMX, JNDI, JAAS and many other integrations.
  • nanohttpd - Tiny, easily embeddable HTTP server.
  • WebSphere Liberty - Lightweight, modular server developed by IBM.
  • WildFly - Formerly known as JBoss and developed by Red Hat with extensive Java EE support.
  • Handlebars.java - Logicless and semantic Mustache templates.
  • Jtwig - Modular, configurable and fully tested template engine.
  • Thymeleaf - Aims to be a substitute for JSP and works for XML files.
  • Apache JMeter - Functional testing and performance measurements.
  • ArchUnit - Test library for specifying and asserting architecture rules.
  • Arquillian - Integration and functional testing platform for Java EE containers.
  • AssertJ - Fluent assertions that improve readability.
  • Awaitility - DSL for synchronizing asynchronous operations.
  • Beanmother - Sets up beans from YAML fixtures.
  • Burst - A unit testing library for varying test data.
  • Citrus - Integration testing framework that focuses on both client- and server-side messaging.
  • ConcurrentUnit - Toolkit for testing multi-threaded and asynchronous applications.
  • Cucumber - Behavioural Driven Development (BDD) testing framework.
  • Cukes-REST - A collection of Gherkin steps for REST-service testing using Cucumber.
  • Fixture Factory - Generates fake objects from a template.
  • Gatling - Load testing tool designed for ease of use, maintainability and high performance.
  • GreenMail - In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL.
  • J8Spec - Library that allows tests written in Java to follow the BDD style introduced by RSpec and Jasmine.
  • JBehave - Framework for BDD.
  • JFairy - Fake data generator.
  • JGiven - Developer-friendly BDD testing framework compatible with JUnit and TestNG.
  • JMockit - Integration testing, API mocking and faking, and code coverage.
  • JSONAssert - Simplifies testing JSON strings.
  • junit-dataprovider - A TestNG-like data provider/runner for JUnit.
  • JUnitParams - Creates readable and maintainable parametrised tests.
  • Lamdba Behave - Descriptive behavioural specification framework.
  • Mockito - Mocking framework that lets you write tests with a clean and simple API.
  • MockServer - Allows mocking of systems integrated with HTTPS.
  • Moco - Concise web services for stubs and mocks; Duke's Choice Award winner (2013).
  • Mutability Detector - Reports whether instances of a given class are immutable.
  • PIT - Fast mutation-testing framework for evaluating fault-detection abilities of existing JUnit or TestNG test suites.
  • pojo-tester - Automatically performs tests on basic POJO methods.
  • PowerMock - Mocks static methods, constructors, final classes and methods, private methods, and removal of static initializers.
  • raml-tester - Tests if a request/response matches a given RAML definition.
  • Randomized Testing - JUnit test runner and plugins for running JUnit tests with pseudo-randomness.
  • REST Assured - Java DSL for easy testing of REST/HTTP services.
  • TestContainers - Provides throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
  • Truth - Google's assertion and proposition framework.
  • WireMock - Stubs and mocks web services.
  • Apache Commons - Provides configuration, validation, collections, file uploading, XML processing and other general-purpose functions.
  • cactoos - Collection of object-oriented primitives.
  • CRaSH - Provides a shell into a JVM that's running CRaSH. Used by Spring Boot and others.
  • Dex - Java/JavaFX tool capable of powerful ETL and data visualization.
  • Embulk - Bulk data loader that helps data transfer between various databases, storages, file formats, and cloud services.
  • Gephi - Cross-platform for visualizing and manipulating large graph networks.
  • Guava - Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and more.
  • JADE - Framework and environment for building and debugging multi-agent systems.
  • JavaVerbalExpressions - Library that helps with constructing difficult regular expressions.
  • JGit - A lightweight, pure Java library implementing the Git version control system.
  • minio-java - Provides simple APIs to access any Amazon S3-compatible object storage server.
  • Protégé - Provides an ontology editor and a framework to build knowledge-based systems.
  • Underscore-java - Port of Underscore.js functions.
  • jabba - Java Version Manager inspired by nvm. Supports Mac OS X, Linux and Windows.
  • jenv - Java Version Manager inspired by rbenv. Can configure globally or per project. Tested on Debian and Mac OS X.
  • SDKMan - Java Version Manager inspired by RVM and rbenv. Supports UNIX-based platforms and Windows.
  • Apache Nutch - Highly extensible, highly scalable web crawler for production environments.
  • Crawler4j - Simple and lightweight web crawler.
  • JSoup - Scrapes, parses, manipulates and cleans HTML.
  • StormCrawler - SDK for building low-latency and scalable web crawlers.
  • Apache Tapestry - Component-oriented framework for creating dynamic, robust, highly scalable web applications.
  • Apache Wicket - Component-based web application framework similar to Tapestry, with a stateful GUI.
  • Blade - Lightweight, modular framework that aims to be elegant and simple.
  • Bootique - Minimally opinionated framework for runnable apps.
  • Grails - Groovy framework that provides a highly productive environment by favoring convention over configuration, no XML and support for mixins.
  • Jooby - Scalable, fast and modular micro-framework that offers multiple programming models.
  • Ninja - Full-stack web framework.
  • Pippo - Small, highly modularized, Sinatra-like framework.
  • Play - Built on Akka, it provides predictable and minimal resource consumption (CPU, memory, threads) for highly-scalable applications in Java and Scala.
  • PrimeFaces - JSF framework with both free and commercial/support versions and frontend components.
  • Ratpack - Set of libraries that facilitate fast, efficient, evolvable and well-tested HTTP applications.
  • Spring Boot - Microframework that simplifies the development of new Spring applications.
  • Vaadin - Event-driven framework build on top of GWT. Uses server-side architecture with Ajax on the client side.
  • Awesome Gradle Plugins
  • Awesome JVM
  • Awesome Microservices
  • Awesome REST
  • Awesome Selenium
  • ciandcd
  • Useful Java Links
  • r/java - Subreddit for the Java community.
  • stackoverflow - Question/answer platform.
  • VirtualJUG - Virtual Java User Group.
  • java.libhunt.com
  • Core Java Volume I--Fundamentals
  • Core Java, Volume II--Advanced Features
  • Effective Java (2nd Edition)
  • Java Concurrency in Practice
  • Thinking in Java
  • Java Off Heap
  • Marco Behler's Screencasts - Screencasts about modern Java development.
  • The Java Council
  • The Java Posse - Discontinued as of 02/2015.
  • Adam Bien - Freelance author, JavaOne Rockstar speaker, consultant, Java Champion.
  • Aleksey Shipilëv - Performance geek, benchmarking czar, concurrency bug hunter.
  • Antonio Goncalves - Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author.
  • Arun Gupta - Java Champion, JavaOne Rockstar, JUG Leader, Devoxx4Kids-er, VP of Developer Advocacy at Couchbase.
  • Brian Goetz - Java Language Architect at Oracle.
  • Bruno Borges - Product Manager/Java Jock at Oracle.
  • Chris Richardson - Software architect, consultant, and serial entrepreneur, Java Champion, JavaOne Rock Star, *POJOs in Action* author.
  • Ed Burns - Consulting Member of the Technical Staff at Oracle.
  • Eugen Paraschiv - Author of the Spring Security Course.
  • Holly Cummins - Technical Lead of IBM London's Bluemix Garage, Java Champion, developer, author, JavaOne rockstar.
  • James Weaver - Java/JavaFX/IoT developer, author and speaker.
  • Java EE - Official Java EE Twitter account.
  • Java Magazine - Official Java Magazine account.
  • Java - Official Java Twitter account.
  • Javin Paul - Well-known Java blogger.
  • Josh Long - Spring Advocate at Pivotal, author of O'Reilly's *Cloud Native Java* and *Building Microservices with Spring Boot*, JavaOne Rock Star.
  • Lukas Eder - Java Champion, speaker, JUG.ch co-leader, Founder and CEO Data Geekery (jOOQ).
  • Mario Fusco - RedHatter, JUG coordinator, frequent speaker and author.
  • Mark Heckler - Pivotal Principal Technologist and Developer Advocate, conference speaker, published author, and Java Champion, focusing on Internet of Things and the cloud.
  • Mark Reinhold - Chief Architect, Java Platform Group, Oracle.
  • Markus Eisele - Java EE evangelist, Red Hat.
  • Martijn Verburg - London JUG co-leader, speaker, author, Java Champion and much more.
  • Martin Thompson - Pasty faced performance gangster.
  • Monica Beckwith - Performance consultant, JavaOne Rock Star.
  • OpenJDK - Official OpenJDK account.
  • Peter Lawrey - Peter Lawrey, Java performance expert.
  • Randy Shoup - Stitch Fix VP Engineering, speaker, JavaOne Rock Star.
  • Reza Rahman - Java EE/GlassFish/WebLogic evangelist, author, speaker, open source hacker.
  • Simon Maple - Java Champion, VirtualJUG founder, LJC leader, RebelLabs author.
  • Stephen Colebourne - Java Champion, speaker.
  • Trisha Gee - Java Champion and speaker.
  • Venkat Subramaniam - Author, University of Houston professor, MicroSoft MVP award recipient, JavaOne Rock Star, Java Champion.
  • Google Java Style
  • InfoQ
  • Java Algorithms and Clients
  • Java, SQL, and jOOQ
  • Java.net
  • Javalobby
  • JavaWorld
  • JAXenter
  • RebelLabs
  • The Takipi Blog
  • TheServerSide.com
  • Vanilla Java
  • Voxxed
  • CONTRIBUTING
Programming Languages
Java 153 HTML 3 C++ 3 Kotlin 2 Gherkin 1 Go 1 JavaScript 1 Scala 1 java 1 TypeScript 1
Keywords
java 74 monitoring 7 awesome 6 json 5 microservices 5 testing 5 serialization 5 awesome-list 4 c-plus-plus 4 c 4 spring-boot 4 spring 4 performance 4 static-analysis 4 java-8 4 android 4 database 4 jackson 3 rest 3 machine-learning 3 dropwizard 3 data-structures 3 test-automation 3 java-library 3 test-driven-development 3 rpc 3 javafx 3 testing-tools 3 mapper 3 jvm 3 xml 3 junit 3 functional-programming 3 code-quality 3 metrics 3 static-code-analysis 3 jdbc 3 jdbi 2 graph-algorithms 2 dijkstra 2 data-mining 2 javascript 2 cpp 2 apm 2 code-analysis 2 resilience 2 collections 2 routing 2 async 2 docker 2