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

Java

Java was originally developed as an alternative to the C/C++ programming languages. It is now mainly used for building web, desktop, mobile, and embedded applications. Java is owned and licensed through Oracle, with free and open source implementations available from Oracle and other vendors.

https://github.com/ethlo/itu

An extremely fast parser and formatter of standardized date and date-times supporting RFC-3339 (ISO-8601 profile) and more.

date dateparser datetime formatter iso-8601 java library no-dependencies optimized parser performance rfc3339 time

Last synced: 16 May 2025

https://github.com/oracle/okafka

Kafka Java Client for Oracle Transactional Event Queues

aq converged-database event-queues java kafka microservices

Last synced: 09 Apr 2025

https://github.com/networknt/light-graphql-4j

GraphQL implementation based on light-4j

graphql graphql-security graphql-validator java relay relayjs security

Last synced: 06 Jul 2025

https://github.com/nakov/imdb-tech-module

IMDB Movie Database (in C#, Java, JS and PHP) - Exam Preparation for the Tech Module @ SoftUni (December 2017)

asp-net-mvc csharp entity-framework expressjs java javascript js mongodb mysql node-js php razor spring-boot spring-data-jpa sql-server symfony thymeleaf twig

Last synced: 28 Apr 2025

https://github.com/29dch/real-time-log-analysis-system

:penguin:基于spark streaming+flume+kafka+hbase的实时日志处理分析系统(分为控制台版本和基于springboot、Echarts等的Web UI可视化版本)

echarts flume hbase java kafka scala spark-streaming spring-boot

Last synced: 29 Apr 2025

https://github.com/oblac/jodd-mail

Simple Java Mail library.

java mail

Last synced: 27 Apr 2025

https://github.com/jklingsporn/coronamq

The simplest way to implement a task queue with Java, Vertx and PostgreSQL.

java message-queue postgres postgresql vertx

Last synced: 12 Mar 2026

https://github.com/spiralmoon/maplestory.openapi

🍁 MapleStory Nexon Open API Client Library for TypeScript, Java, C#, Python. KMS, MSEA is now available!🍁

csharp java javascript kms library maplestroy msea nexon-openpai openapi package python sdk typescript

Last synced: 01 Apr 2026

https://github.com/stevekung/skyblockcatia

Useful Hypixel Skyblock features, QOL and In-game API Viewer

forge hypixel-skyblock java minecraft skyblock skyblockcatia

Last synced: 31 Mar 2026

https://github.com/apache/ambari-logsearch

Apache Ambari Logsearch is a sub project of Apache Ambari.

ambari big-data java javascript python

Last synced: 05 Mar 2026

https://github.com/rubbaboy/emojide

Programming in Discord emojis. Second place for the ProgrammerHumor Hackathon

antlr discord emoji ide intellij java javascript

Last synced: 20 Jul 2025

https://github.com/maruTA-bis5/mattermost4j

Mattermost API v4 Client for Java

hacktoberfest java mattermost

Last synced: 07 May 2025

https://github.com/danhpaiva/una-gqs-refatoracao-ex-01-202301

🧑‍🏫 ~ Exercício para fixacao do conteúdo de Refatoração e Git

algorithms java poo refactoring

Last synced: 08 May 2025

https://github.com/agilie/dribbble-android-sdk

Dribbble Android SDK is an unofficial wrapper for Dribbble API v1. (Designer, Shot, Comment, User Story, Like, Follow)

dribbble dribbble-android-sdk dribbble-api java oauth2 oauth2-client retrofit2 rxjava2 sdk

Last synced: 25 Jun 2025

https://github.com/isinhah/api-pedidos-sushi

API REST desenvolvida para um Sistema de Pedidos de Sushi, permitindo que clientes visualizem o cardápio e façam pedidos online.

flyway-migrations java junit5 jwt-token postgresql spring-boot

Last synced: 23 Aug 2025

https://github.com/sublemon-team/subvoyage

Mindustry mod adding new oceanic-themed Atlacian planet, that aims to provide unique experience for players.

java mindustry-mod mindustry-mod-v7 mindustry-mods

Last synced: 05 Apr 2025

https://github.com/mvnpm/mvnpm

Use npm like any other Maven/Gradle dependency...

gradle java maven npm

Last synced: 18 May 2026

https://github.com/ozkanpakdil/swaggerific

Alternative to postman with graalvm meaning native binary exe(windows) file or executable file for Linux and IOS

gluonfx graalvm java postman rest-api restful-api

Last synced: 18 Jan 2026

https://github.com/depromeet/spot-server

⚾️ 야구장 좌석 시야 확인 서비스, SPOT!

gradle java multi-module spring-boot

Last synced: 08 Sep 2025

https://github.com/slimefun/dough

Library containing a lot of useful utility classes for the everyday Java and Spigot/Paper developer.

bukkit dough java java-library library minecraft paper papermc spigot spigotmc utilities

Last synced: 09 Apr 2025

https://github.com/col-e/class-version-patcher

For when you are stuck in Java 8 but want to use new language features and dependencies

gradle gradle-plugin java maven maven-plugin

Last synced: 02 Jul 2025

https://github.com/danvega/springit

Reddit Clone built using Spring Boot 2

java reddit spring spring-boot

Last synced: 05 Sep 2025

https://github.com/razaghimahdi/android-loading-dots

A library which allows you to have some beautiful loading with dots, for both Java and Kotlin in XML

android android-library custom-view java kotlin kotlin-android loading loading-animations loading-indicator progress-circle xml

Last synced: 22 Apr 2025

https://github.com/kud1ing/rucaja

Calling the JVM from Rust via JNI

ffi java jni rust

Last synced: 19 Apr 2025

https://github.com/adambien/best-of-java-shorts

A selection of Java Shorts from http://youtube.com/bienadam/shorts that I sometimes present at conferences

conferences devoxx infoshare java shorts w-jax

Last synced: 29 Jul 2025

https://github.com/josdem/vetlog-spring-boot

Maintain your pet history organized

flyway gradle groovy java junit5 spring-boot thymeleaf

Last synced: 22 Apr 2025

https://github.com/caolib/book_management_system

Java课程设计,图书借阅管理系统,springboot+vue3前后端分离开发

java mybatis-plus mysql redis springboot

Last synced: 10 Oct 2025

https://github.com/iboxdb/db4o-gpl

new Db4o GPL Source Code for Java7+ & .netstardard2.0 Android Xamarin..., the best database project to help you to learn how to make databases

data database db4o embaddable java netstandard oodb

Last synced: 14 Jan 2026

https://github.com/kangarko/corearena

A high-end monster arena Minecraft plugin with procedural damage and RPG system. Maps included!

arena bukkit bukkit-plugin game java minecraft minecraft-plugin minigame plugin rpg spigot spigot-plugin

Last synced: 21 Mar 2025

https://github.com/guobinhit/design-pattern

🌴 Detail design pattern and give many demos in Java.

design-pattern factory java observable singleton

Last synced: 01 May 2025

https://github.com/kyoripowered/adventure-platform-mod

An adapter for adventure to integrate with Fabric and NeoForge

fabric java minecraft neoforge

Last synced: 22 Aug 2025

https://github.com/asyncapi/kotlin-asyncapi

Simplify event-driven API documentation for Kotlin microservices

asyncapi documentation event-driven java kotlin kotlin-asyncapi spring-boot

Last synced: 25 Jan 2026

https://github.com/expediagroup/rhapsody

Reactive Streams framework with support for at-least-once processing

java kafka rabbitmq reactive-streams reactor streams

Last synced: 06 Jul 2025

https://github.com/aws-cloudformation/cloudformation-cli-java-plugin

The CloudFormation Provider Development Toolkit Java Plugin allows you to autogenerate java code based on an input schema.

cloudformation-cli java resources

Last synced: 06 Apr 2025

https://github.com/cajuncoding/pdftemplating.xslfo

This is a C# .NET solution that tests and illustrates the capabilities of Xsl-FO for dynamically generating PDF documents. It provides a way to generate the XSL-FO source xml from Xslt or Razor Templating to address various development teams. And it provides basic WinForms Application that can be used to aid in developing the Xslt and Xsl-FO markup.

apache-fop azure-functions csharp fonet fop java microservice pdf-files pdf-generation pdf-rendering pdf-reports pdf-templating razor-templates razor-views serverless template-engine xsl-fo xslfo xslt xslt-template

Last synced: 16 Mar 2025

https://github.com/hologramlib/hologramlib

Powerful, modern packet-based Minecraft hologram library with text, item & block displays, leaderboards, and extensive customization.

entitylib hologram java minecraft minimessage packetevents papermc plugin spigot

Last synced: 05 May 2025

https://github.com/ma63d/leetcode

My LeetCode Solutions. 我的leetcode解题源码.

java javascript leetcode leetcode-solutions

Last synced: 29 Jul 2025

https://github.com/hellokoding/single-sign-on-out-auth-jwt-cookie-redis-springboot-freemarker

Single Sign Out: Authentication Service Example with JSON Web Token (JWT), Spring Boot and Redis

architecture authentication cookie freemarker java jwt redis scale single-sign-on single-sign-out spring-boot sso

Last synced: 04 Oct 2025

https://github.com/macacajs/wd.java

Java Client binding for Macaca

java macaca webdriver

Last synced: 02 Aug 2025

https://github.com/atrox/haikunatorjava

Generate Heroku-like random names to use in your Java applications

haikunator heroku java

Last synced: 31 Jul 2025

https://github.com/digitalpetri/strict-machine

A declarative DSL for building asynchronously evaluated Finite State Machines on the JVM

finite-state-machine fsm java state-machine

Last synced: 14 Apr 2025

https://github.com/nervosnetwork/ckb-sdk-java

Java SDK for CKB

blockchain ckb java nervos

Last synced: 07 Apr 2025

https://github.com/imb11/skinshuffle

Choose and change your skin in-game!

java minecraft minecraft-skins modding modrinth skin-changer skins

Last synced: 25 Aug 2025

https://github.com/yusuf-daglioglu/spring_microservices_demo

Simple Spring (Netflix) Cloud Native Microservice Project

cloud-native docker java netflix-eureka spring zuul-gateway

Last synced: 15 Apr 2025

https://github.com/coldnew/twse-captcha-solver-dl4j

A deeplearning based captcha solver for http://bsr.twse.com.tw/bshtm/

captcha-solver deeplearning4j java stock taiwan twse

Last synced: 12 Apr 2025

https://github.com/apache/struts1

Mirror of Apache Struts 1

java struts web-framework

Last synced: 10 Apr 2025

https://github.com/gamussa/kuma4devs

Service Mesh for the Developer (with examples using Kuma Mesh kuma.io)

java kotlin mtls observability service-mesh zero-trust

Last synced: 25 Jun 2025

https://github.com/aws-samples/amazon-kinesis-timestream-grafana

Sample serverless application that reads events from Amazon Kinesis Data Streams and batches records to Amazon Timestream via Apache Flink app, visualizing results via Grafana.

amazon-kinesis amazon-kinesis-data-analytics-flink amazon-kinesis-streams amazon-timestream amazon-web-services analytics aws aws-cdk aws-lambda gradle grafa java java-11 kotlin

Last synced: 18 Jul 2025

https://github.com/gebi/sslpoke

Tool to test SSL connections from within the java VM (with http proxy support)

certificates java keystores ops ops-infra ssl tls

Last synced: 20 Jan 2026

https://github.com/masterflomaster1/jfxcrypto

🔐 150+ Algorithms, Reactive GUI, and More: Text & File Encryption, Hashing, MAC, Key Generation, and Password Strength Evaluation. JCA, JCE with Bouncy Castle

aes aes-256 chacha20 cipher encryption enigma gui hash hmac java javafx md5 mvvm password pbkdf2 rc4 reactive salsa20 security sha-256

Last synced: 13 Jul 2025

https://github.com/xdev-software/chartjs-java-model

Provides Java models for Chart.js

chartjs charts java model

Last synced: 05 Mar 2026

https://github.com/ytbryan/summerboot

A full-stack Spring Boot skeleton project focusing on ecommerce & blog functionalities. Java ☕️

database ecommerce full-stack heroku java jpa mvc social spring spring-boot-skeleton springboot stripe

Last synced: 25 Feb 2026

https://github.com/ivangfr/spring-data-jpa-relationships

The goal of this project is to study the JPA relationships: one-to-one, one-to-many / many-to-one, and many-to-many.

java jpa-relationships many-to-many many-to-one mapstruct one-to-many one-to-one postgresql spring-boot spring-data-jpa spring-web-mvc springdoc-openapi testcontainers

Last synced: 19 Oct 2025

https://github.com/gmantele/vollt

Java libraries implementing the IVOA protocol: ADQL, UWS and TAP

adql ivoa java tap uws web-app

Last synced: 16 Jan 2026

https://github.com/astefanutti/further-cdi

🔊 Going further with CDI presentation

camel cdi dropwizard java javaee metrics

Last synced: 14 Apr 2025

https://github.com/amrdeveloper/androidresourcemanager

Android Resource Manager application to manage and analyse your app resources with many features like image resize, Color, Dimens and code Analysis

android-resources arm code-analysis hacktoberfest image-resizer java javafx resize-images resize-tool

Last synced: 22 Mar 2025

https://github.com/xxdark/unsolver-8306275

Enables EnableDynamicAgentLoading in a remote process

encapsulation java java-agent

Last synced: 19 Apr 2025

https://github.com/jpmorganchase/sandboni-core

Sandboni - Java test optimization library which reduces test execution time without compromising quality

code java jpmorganchase static test-automation testing-tools

Last synced: 14 Jan 2026

https://github.com/dsych/blanket.nvim

Code coverage gutter for Neovim based on Jacoco reports

coverage-gutters coverage-report jacocoverage java neovim-plugin

Last synced: 17 Jul 2025

https://github.com/dehora/nakadi-java

🌀 Client library for the Nakadi Event Broker (examples: http://bit.ly/njc-examples, site: https://dehora.github.io/nakadi-java/)

gson java nakadi rxjava

Last synced: 16 May 2025

https://github.com/uttesh/pdfngreport

This is the pdf report plugin library written for testng/selenium frameworks, this listener will generate the pdf report on testcases execution, its very simple to configure no need to write any code.

ant java listener pdf-report pom selenium selenium-java testng

Last synced: 05 Sep 2025

https://github.com/hei-school/hei-admin-api

RESTful API for managing a school

java openapi3 restful-api school-management

Last synced: 16 Jan 2026

https://github.com/stcarrez/sql-benchmark

Tool to make SQL benchmark on different drivers, languages and databases

ada java jdbc mysql postgresql python sql sqlite

Last synced: 04 Sep 2025

https://github.com/codelytv/java-oop-examples

Object-Oriented Programming recap with Java examples

java java8 oop oop-examples oop-principles

Last synced: 26 Apr 2025

https://github.com/faforever/faf-java-api

The FAForever REST api

elide java rest spring

Last synced: 06 Jun 2026

https://github.com/vy/reactor-pubsub

Google Pub/Sub Java driver for mortals.

google-cloud java pubsub queueing reactive

Last synced: 14 Jan 2026

https://github.com/angular2guy/aidocumentlibrarychat

A project to show howto use SpringAI with OpenAI to chat with the documents in a library. Documents are stored in a normal/vector database. The AI is used to create embeddings from documents that are stored in the vector database. The vector database is used to query for the nearest document. That document is used by the AI to generate the answer.

ai angular angular-material chatgpt deepseek-coder embeddings gradle java liquibase llava llm mixtral-8x7b ollama pgvector postgresql spring-ai spring-boot sqlcoder typescript vector-database

Last synced: 28 Jun 2025

https://github.com/fraktalio/courier-demo

Axon demo - `Courier Management` Information System - A part of the systems landscape: https://github.com/fraktalio/courier-demo, https://github.com/fraktalio/restaurant-demo, https://github.com/fraktalio/order-demo

axon-framework cqrs ddd demo-app event-sourcing eventmodeling java microservices spring-boot

Last synced: 17 Jan 2026

https://github.com/raydac/jprol

Yet another Java based Prolog engine

engine gui-editor java prolog prolog-engine prolog-programming-language

Last synced: 08 Jan 2026

https://github.com/okumin/influent

A Fluentd server running on the JVM

fluentd java

Last synced: 14 Jan 2026

https://github.com/jeltedeproft/Norii

A turn based strategy rpg - Java (libgdx)

2d game java libgdx open-source turn-based-strategy

Last synced: 11 Mar 2025

https://github.com/bigggge/note

 Material Design 记事本

android java material-design

Last synced: 22 Mar 2025

https://github.com/hellokoding/dockercompose-springboot-nginx

A simple Spring Boot web application running behind NGINX and inside Docker containers

docker-compose java maven nginx spring-boot

Last synced: 17 Aug 2025

https://github.com/normangyllenhaal/spring-boot-payment-starter

google play 和 appstore 服务端支付校验

appstore googleplay java payment spring springboot

Last synced: 22 Oct 2025

https://github.com/mkpaz/corf

A set of tools for IT engineers

gui java javafx javafx-application plugin-system tools

Last synced: 10 Apr 2025

https://github.com/faceless2/zeroconf

A very simple pure Java implementation of Multicast DNS SD (Service Discovery)

dns-sd java service-discovery zeroconf

Last synced: 07 Mar 2026

https://github.com/rapter1990/simplebanking

Simple Banking App (Spring Boot, Gradle, JUnit, Integration Test, Postgresql, Prometheus, Grafana, Github Actions, Postman)

ci-cd continuous-deployment continuous-integration docker docker-compose github-actions gradle grafana integration-test java junit monolith openapi postgresql postman prometheus spring-boot swagger

Last synced: 16 May 2025

https://github.com/kongruksiamza/javabasic

โค้ดประกอบการสอนเนื้อหาเขียนโปรแกรมด้วยภาษา Java เบื้องต้น

java java-programming-language javabasic

Last synced: 22 Jun 2025

https://github.com/qala-io/java-beginner-course

Self paced course for those who want to become Java programmers

java tutorial

Last synced: 09 Mar 2026

https://github.com/self-xdsd/self-core

Self's core, implemented with Java SE 11.

java oop

Last synced: 17 Aug 2025

https://github.com/extrawest/charge-point-simulator-via-ocpp-2.0.1

This is a emulator for huge numbers of charge points, that connect to central system through web socket and implement OCPP 2.0.1

charger docker dockerfile java jetty maven ocpp ocpp201 simulator spring spring-boot websocket

Last synced: 08 Sep 2025

https://github.com/jakartaee/transactions

Welcome to the Jakarta EE Transactions API Project (formerly JTA)

api jakarta-ee jakartaee java transaction

Last synced: 03 Jul 2025