SoapUI is a free and open source cross-platform functional testing
The OWASP ZAP core project
Terminal emulator application for Android OS extendible
Barcode scanning library for Java, Android
Apache NetBeans
Postgresql JDBC Driver
Programmer-friendly testing framework for Java and the JVM
Desktop/Android/HTML5/iOS Java game development framework
Google maps for block game
A full-featured package manager and viewer for Android
Apache Maven core
Identity and access management for modern applications and services
A reverse engineering suite (decompiler, editor, debugger and more)
Main Liquibase Source
Distributed tracing without code changes
signal-cli provides a commandline, dbus and JSON-RPC interface
Hibernate's core object/relational mapping functionality
Java interface to OpenCV, FFmpeg, and more
Continuous inspection
Metaprogramming library to analyze and transform Java source code
A powerful text/code editor for Android
An extensible media player for Android
A J2ME emulator for Android
Open-source code analysis platform for C/C++/Java/Binary/Javascript
Kafka Web UI