Termux - a terminal emulator application for Android OS extendible by variety of packages.

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

IntelliJ IDEA & IntelliJ Platform

Graphs for Everyone

Enso Analytics is a self-service data prep and analysis platform designed for data teams.

An open source GitHub Android client app, faster and concise.

Real-time transport layer for Java AI agents. Build once with @Agent — deliver over WebSocket, SSE, gRPC, and WebTransport/HTTP3. Talk MCP, A2A and AG-UI.

ProGuard, Java optimizer and obfuscator

Automated mass refactoring of source code.

Java bindings for Skia

A Java server-side recording and playback solution based on JVM-Sandbox

https://openjdk.org/projects/code-tools/jmh

A Real-Time Audio Processing Framework in Java

A Java entity system inspired by Ash & Artemis.

The Stack Overflow clone for your team (self-hosted or hosted)

A Simple showcase for the Sea-of-Nodes compiler IR

https://openjdk.org/projects/valhalla

Visual programming meets Haskell

ARCHIVED: Bytecode to source converting Java & Kotlin code into JavaScript, C++, D, C#, PHP, AS3, Dart and Haxe and run it everywhere. Also use JVM code in your favourite language as a library.

JPF is an extensible software analysis framework for Java bytecode. jpf-core is the basis for all JPF projects; you always need to install it. It contains the basic VM and model checking infrastruc…

The Jolie programming language

A source code of android game called 'antiyoy'.

Jikes RVM (Research Virtual Machine)

Generic (Java FX) Graph Visualization Library

A functional query language

Generic AST parsing library for kotlin multiplatform

ReasonML Language Plugin for IDEA

The most advanced controller mod for Minecraft.

Cliff Click Language Hacking