Bonjour, formerly known as Rendezvous, is a networking technology from Apple that is designed to make zero-configuration simple. The Apple website says it “enables automatic discovery of computers, devices, and services on IP networks”. In a previous article I dumped on OS X quite a bit and ruffled some peoples feathers :), but I have to say this is one area that is quite interesting and they are releasing an SDK for Windows as well. For more information check it out here.
I have seen the technology in action in a classroom setting where students were doing collaborative note taking using SubEthaEdit. I have to admit, it is pretty cool.