No, I don't know why this has an IP address. It used to be part of bombjack.org.
An application that lets any laptop act as a DJ console. With it, you can mix audio files in many formats.
An open-source drum machine and MIDI sequencer that also uses AI technology to figure out melodies for the patterns you program.
Plug in the MAC address of a network card or Bluetooth device and it'll tell you who manufactured it.
An open source platform/strategy game reminiscent of Worms.
Somebody cloned Portal into an open source game done entirely in ASCII. Cute.
Find the MAC address of nearly any wi-fi router in Google's wardriving database.