calliope
Calliope is a video recorder for DVB systems. It currently features a simple AJAX web-based UI, and supports TV tuners placed on arbitrary machines on the local network.
At the moment, it’s in a very rough state, but appears to be functional for the purposes of making recordings. There’s little or no documentation on how to set it up – if you want to try it out and can’t work out what all the bits do, mail me.