IBM's Alphaworks: Robocode - http://www.alphaworks.ibm.com/tech/robocode/ Offers information, and downloads for Windows, Linux, and Mac.
Java Robots Home Page - http://www.mobydisk.com/java/jrobots/ Download, discussion and documentation.
Yahoo! Groups: javajousters - http://games.groups.yahoo.com/group/javajousters/ A group devoted to challenges among Java algorithms and Jrobots fights.
