Top JAVA GitHub Repositories & Tools (2026)

Unrestricted Open-source alternative to AI video platforms — Free AI image & video generation studio with 600+ models (Flux, Midjourney, Kling, Sora, Veo). No content filters. Self-hosted, MIT licensed.

Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.

📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Standard Library

Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..

MagicMirror² is an open source modular smart mirror platform. With a growing list of installable modules, the MagicMirror² allows you to convert your hallway or bathroom mirror into your personal assistant.

☕️ Classic, reliable, trusted test framework for Node.js and the browser

Instant-loading web apps, without effort

A simpler site generator. Transforms a directory of templates (of varying types) into HTML.

🐐 Simple and complete React DOM testing utilities that encourage good testing practices.

DOMPurify - a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify works with a secure default, but offers a lot of configurability and hooks. Demo:

🌊 A flexible and fun JavaScript file upload library

State-of-the-art Machine Learning for the web. Run 🤗 Transformers directly in your browser, with no need for a server!

Simple JavaScript testing framework for browsers and node.js

Node.js based forum software built for the modern web

A bidirectional Markdown to HTML to Markdown converter written in Javascript

A declarative, HTML-based language that makes building web apps fun

Fast Rust bundler for JavaScript/TypeScript with Rollup-compatible API.