A really low footprint (< 10 Kb) Java VM and replacement firmware for the Lego Mindstorms RCX microcontroller, which is part of Lego's Robotics Invention System. TinyVM is the progenitor of <a href="http://lejos.sourceforge.net">leJOS</a>.
iROS is a meta-operating system for technology-rich "interactive rooms". The core components (Event Heap, DataHeap, iCrafter) provide communication, data storage, and service management for an iRoom.
leJOSUnit is a port of the Java based JUnit framework for testing robotic programs with a very small footprint. leJOS is a Java based replacement firmware (OS) for the LEGO Mindstorms RCX brick that comes with Lego\'s Robotics Invention System.