A Java Virtual Machine for OpenJDK
Metaprogramming library to analyze and transform Java source code
Easily create Spring-powered, production-grade applications
VisualVM is an All-in-One Java Troubleshooting Tool
The modular web framework for Java and Kotlin
Lightweight mobile-friendly Docker Swarm management UI
Visualizes all aspects of compiled Java class files
Fast, scalable, multi-language and extensible build system
Desktop/Android/HTML5/iOS Java game development framework
Free implementation of Play Services
The OWASP ZAP core project
iText for Java represents the next level of SDKs for developers
A modification for the Discord Android App
Browser automation framework and ecosystem
ProGuard, Java optimizer and obfuscator
signal-cli provides a commandline, dbus and JSON-RPC interface
A free and open development kit for the Sega Mega Drive
Apache Maven core
Java bytecode engineering toolkit
Skript is a Bukkit plugin which allows server admins
Java library for creating and manipulating vector geometry.
Copybara: A tool for transforming and moving code between repositories
Distributed tracing without code changes
Red5 Server core
Apache Log4j 2 is a versatile, feature-rich, efficient logging API