Jainja is a JVM (Java Virtual Machine) written in Java
An hack of Jscheme with a lot of enhancements and additional features.
The open sourced NetRexx reference implementation
Portable Graphics Primitives
Code editor in single HTML file
Web IDE in single HTML file
Global keyboard and mouse listeners for Java
Android (f/w 2.1+) on screen keyboard for multiple languages
Java bindings for WFIO
Emulator of the ancient 8 bit microprocessor SC/MP 2
UI library to improve the efficiency of Android UI development
The smallest header-only GUI library(4 KLOC) for all platforms
SikuliX version 2.0.0+ (2019+)
The last (accessible) carousel you'll ever need
A simple and fast frontend for the QEMU Emulator - Freeware.
JPHP - an implementation of PHP on Java VM
Keystone assembler framework: Core (Arm, Arm64, Hexagon, Mips, etc.)
Android virtual machine and deobfuscator
Java ME Compatible Environment
C-level driver collection for MSP430 and derivatives
8-bit Graphical API for Java
Mark Stephen Sobkow's Code Factory
LayoutManager extension for RecyclerView