LejOS (Coded in Java)

OmniKraft has the following program downloaded on the RCX brick:


Requires the latest version of lejOS to install.

Because lejOS uses Java, and can run on a unix or windows machine.
Mac version not available.

LejOS allows for up to 8 Programs to be downloaded as opposed to 6.
Allows text to be displayed on LCD.
You can program your own methods to comply with homemade sensors.
LejOS is also open source, meaning that anyone can help make it better.