LeJOS, Java for Lego Mindstorms / RCX Downloads
leJOS is a Java based replacement firmware for the Lego Mindstorms RCX microcontroller and NXJ is a Java based replacement firmware for the Lego Mindstorms NXT microcontroller
NQC - OGPC - One Geek Per Classroom
How to Use Lego Mindstorms Using Linux
Configuring the LEGO USB Tower on Linux | pbrick.info
Using NQC on a Raspberry Pi to Program a Lego Mindstorms RCX Brick | minordiscoveries