Apache Log4j 2 is a versatile, feature-rich, efficient logging API
A Java Virtual Machine for OpenJDK
Metaprogramming library to analyze and transform Java source code
ProGuard, Java optimizer and obfuscator
Sandwich is an adaptable and lightweight sealed API library
JavaScript implementation of various web standards, for use with Node
S3Proxy implements the S3 API and proxies requests
JavaCore is a summary of experience with Java core technologies
A Java math library for OpenGL rendering calculations
API automation and load testing framework
Open-source, cross platform Qt based IDE for reverse-engineering
Kafka Web UI
Essential hooks for modding with Fabric
VisualVM is an All-in-One Java Troubleshooting Tool
Pluggable and configurable code formatting platform written in Rust
Thymeleaf is a modern server-side Java template engine for web
AnLinux allow you to run Linux on Android without root access
Runtime code generation for the Java virtual machine
Build cross-platform native progressive web apps for iOS and Android
Insanely fast native C++, Swift or Kotlin modules
jOOQ is the best way to write SQL in Java
iText for Java represents the next level of SDKs for developers
True object-oriented Java web framework without NULLs
Most popular Mocking framework for unit tests written in Java