Jvm GitHub Repositories (2026) · Open Source Tools

A tool to stop JVM architecture drift before it reaches main. Configurable through yaml; no architecture test code.

Compiles Java bytecode to JavaScript, WebAssembly and C

JDK main-line development https://openjdk.org/projects/jdk

CPU Info is a multiplatform application which provides information about device hardware and software

Apache Log4j is a versatile, feature-rich, efficient logging API and backend for Java.

A comprehensive, from-scratch Java Virtual Machine built in Rust, featuring a modular architecture, full bytecode support, and JNI integration

Koog is a JVM (Java and Kotlin) framework for building predictable, fault-tolerant and enterprise-ready AI agents across all platforms – from backend services to Android and iOS, JVM, and even in-browser environments. Koog is based on our AI products expertise and provides proven solutions for complex LLM and AI problems

Open-source, multi-platform harness for AI agents - a native, multi-threaded operator's console (JVM, not Electron) to run Claude Code, Codex, Gemini or OpenCode with a real browser, terminal, editor, secrets & 200+ MCP tools. Built for enterprises, science & research.

Kora is simple, easy, performant Java & Kotlin comprehensive framework for backend applications

Gradle plugin for JVM projects written in Java, Kotlin, Groovy, or Scala; and Android projects written in Java or Kotlin. Provides advice for managing dependencies and other applied plugins

Application configuration / properties loading for JVM applications

Production-safe dynamic tracing and diagnostics for Java applications—attach to live JVMs with no restart or recompilation.

The next-generation Minecraft: Bedrock Edition server software aims to be reliable, fast and feature-rich 🌟

An OpenJDK release maintained and supported by SAP

An Intuitive Event-Driven Reactive Programming Library for Java

Non-Blocking Reactive Foundation for the JVM

Gradle plugin for creating fat/uber JARs, transforming files, relocating packages, and optimizing with R8/ProGuard. The Gradle counterpart to Maven Shade Plugin.

Lightweight Multiplatform logging framework for Kotlin. A convenient and performant logging facade.

The official MongoDB drivers for Java, Kotlin, and Scala

Apache Flume is a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log-like data