Perhaps the best iconic language tool to replace Lego’s RIS, it generates NQC code & facilitates handling the NQC compilation + deployment processes, too. (Project was formerly known as fUNSoftWare.)

A tiny Java Virtual Machine for the Lego MindStorms RCX, containing a VM for Java bytecodes and additional software to load and run Java programs.

An experimental robot platform API for integrating a Raspberry PI with a Lego MindStorms RCX robot.