Apache NetBeans
A reverse engineering suite (decompiler, editor, debugger and more)
Metaprogramming library to analyze and transform Java source code
Google maps for block game
Java interface to OpenCV, FFmpeg, and more
Test automation made simple
A complete 3-D game development suite written in Java
Identity and access management for modern applications and services
Most popular Mocking framework for unit tests written in Java
A Java Virtual Machine for OpenJDK
Postgresql JDBC Driver
Parser generator to read, process, or translate structured text
A J2ME emulator for Android
A Discord music bot that's easy to set up and run yourself
ProGuard, Java optimizer and obfuscator
Build great things at any scale
signal-cli provides a commandline, dbus and JSON-RPC interface
Framework for building GraalVM-enabled command line apps
SequencePlugin for IntelliJ IDEA
The IDE for competitive programming
Skript is a Bukkit plugin which allows server admins
elevenlabs-api is an open source Java wrapper around the ElevenLabs
Fast and usable source code search and cross reference engine
Make writing Java http clients easier
OpenAPI Generator allows generation of API client libraries