Unleash the power of Java - JBang Lets Students, Educators and Professional Developers create, edit and run self-contained source-only Java programs with unprecedented ease.
The open source Solver AI for Java and Kotlin to optimize scheduling and routing. Solve the vehicle routing problem, employee rostering, task assignment, maintenance scheduling and other planning problems.
AWS EKS Kubernetes - Masterclass | DevOps, Microservices
Sketchware Pro's sources in Java. Now anyone can contribute to Sketchware Pro.
Distributed Big Data Orchestration Service
EventMesh is a new generation serverless event middleware for building distributed event-driven applications.
JVector: the most advanced embedded vector search engine
An open-source, code-first Java toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
Spring Security and Angular:: A tutorial on how to use Spring Security with a single page application with various backend architectures, ranging from a simple single server to an API gateway with OAuth2 authentication.
🔥MateCloud是一款基于Spring Cloud Alibaba的微服务架构。目前已经整合Spring Boot 4.0.8、 SpringCloud 2025、Spring Cloud Alibaba 2025、Spring AI 2.0.1、Spring Security Oauth2、Feign、Dubbo、JetCache、RocketMQ等,支持多租户的低代码平台,Saas平台开发套件
🦎 A lightweight, multi-protocol gateway for event-driven applications and AI agents. Expose and govern Kafka, MQTT, APIs, and MCP through one high-performance engine with shared routing, security, schema, and observability.
A multi-modal vector database that supports upserts and vector queries using unified SQL (MySQL-Compatible) on structured and unstructured data, while meeting the requirements of high concurrency and ultra-low latency.
GWT Open Source Project
OpenEMS - Open Source Energy Management System
A monotone line-based icon pack for android
TripleA is a turn based strategy game and board game engine, similar to Axis & Allies or Risk.
Open source guitar tablature editor
Diff Utils library is an OpenSource library for performing the comparison / diff operations between texts or some kind of data: computing diffs, applying patches, generating unified diffs or parsing them, generating diff output for easy future displaying (like side-by-side view) and so on.
Ebean ORM
Open source Java implementation for Raft consensus protocol.
Retail banking sample application showcasing Kubernetes and Google Cloud
QuPath - Open-source bioimage analysis for research
Elasticsearch File System Crawler (FS Crawler)
A self-hosted, privacy-first location timeline platform: an open-source alternative to Google Timeline with automatic trip detection, Immich integration, and rich analytics.
First open-source data discovery and observability platform. We make a life for data practitioners easy so you can focus on your business.
ZStack - the open-source IaaS software http://zstack.org (国内用户请至 http://zstack.io)
Eclipse Milo™ - an open source implementation of OPC UA (IEC 62541).
🔥🔥🔥 A read-only ORM for complex queries in Java
Apache Struts is a free, open-source, MVC framework for creating elegant, modern Java web applications
Spring Reactive playground
Infinispan is an open source data grid platform and highly scalable NoSQL cloud data store.
An LoD rendering mod for minecraft
Open-source semantic layer: one cube for Excel (MDX/XMLA), dashboards, and AI agents (MCP). Mondrian + Apache Calcite.
High Performance Software-Defined Block Storage for container, cloud and virtualisation. Fully integrated with Docker, Kubernetes, Openstack, Proxmox etc.
Simple API, Complex Emails (Jakarta Mail smtp wrapper)
Archi: ArchiMate Modelling Tool
IoT DC3 — Connect the Physical World to AI. An open-source Industrial IoT Runtime for Physical AI: 36 protocol drivers, edge-to-cloud data delivery, and an MCP tool gateway so AI agents act on devices in a safe, controllable, traceable loop.
Android on_device Face Recognition 、 Liveness detection and 1:N & M:N Face Search SDK 端侧可离线人脸识别 活体检测 以及1:N M:N 人脸搜索SDK
Sakai is a freely available, feature-rich technology solution for learning, teaching, research and collaboration. Sakai is an open source software suite developed by a diverse and global adopter community.
Gerrit Code Review - (mirror of https://gerrit.googlesource.com/gerrit)
Just another ComputerCraft fork
SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.
HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform
MCreator is an open-source software used to make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons, resource packs, and data packs using an intuitive easy-to-learn interface or with an integrated code editor. It is used worldwide by Minecraft players, aspiring mod developers, for education, online classes, and STEM workshops.
Fast computer vision library for SFM, calibration, fiducials, tracking, image processing, and more.
Anserini is a Lucene toolkit for reproducible information retrieval research
Enterprise-Grade Open-Source Network Management Platform
Customizable, privacy‑first, open-source clock app inspired by AOSP Clock
Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.
SteVe - OCPP server implementation in Java. Your trusted open-source EV charging station management system since 2013. Used by CPOs, manufacturers and developers worldwide. Managed cloud →
Slimefun 4 - A unique Spigot/Paper plugin that looks and feels like a modpack. We've been giving you backpacks, jetpacks, reactors and much more since 2013.
Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.
Rate limit auto-configure for Spring Cloud Netflix Zuul
(Official) The DSpace digital asset management system that powers your Institutional Repository
An open source ML system for the end-to-end data science lifecycle
SonarQube C++ Community plugin (cxx plugin): This plugin adds C++ support to SonarQube with the focus on integration of existing C++ tools.
Open source research data repository software
Spring Boot integration with p6spy, datasource-proxy, flexy-pool and spring-cloud-sleuth
Open-source android spyware
High Performance Primitive Collections for Java