Not exactly related but I am sure will be of interest.
Propellerhead have made Rebirth RB338 FREE. Works great with a MidiBox controller.
For any that don’t know RB338 is a TB303, TR808 and TR909 in software, not quite as ‘raw’ as the real thing but gives some great sounds.
To get it, go to http://www.rebirthmuseum.com/
You will need to register to download (torrent)
Dave