Mixin is a trait/mixin and bytecode weaving framework for Java
Static site IDE is a Static Site Generators aka Static Site Editor
A java framework for desktop applications
Compose Software Without Writing Any Programing Code
A simple portable Code Editor for any language
Launch an external diff tool like WinMerge in Eclipse
ByteX is a bytecode plugin platform based on Android Gradle Transform
QNC is a command line interface app for creating quick notes
Java class file shrinker, optimizer, obfuscator, and preverifier
A programmer-oriented testing framework for Java
A simple Bash IDE / Debugger
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
Java framework that allows you to unit test code normally
Marathon supports testing of Java/Swing and Java/Fx applications.
Vector drawing program for LaTeX using PSTricks
JPHP - an implementation of PHP on Java VM
Java5 mobile agents in peer2peer containers without stubs/skeletons.
Free and open-source style and grammar editor
Open-source, cross platform Qt based IDE for reverse-engineering
HL7 Inspector is a tool for managing HL7 messages
A continuation of the popular Artemis ECS framework