RSpactor is a little command line tool to automatically run your changed specs (much like autotest). As you may expect, it concentrates on the use of RSpec. It was especially designed to use filesystem events like FSEvent on Leopard (MacOS 10.5) instead of permanently polling a directory structure. RSpactor is currently only working on Mac OS 10.5. But hey: I’m very confident that the next version of RSpactor will work on Linux boxes, too.