This soundcard host a genuine SID chip, they say : http://www.hardsid.com/
This synth is built around a SID chip too, but it's out of stock : http://www.sidstation.com/
As for software, Reason v2 hosts a new synth, the Malstrom. It is possible to emulate old synth sounds using it. For an exemple, you can listen to my retro tune, Mistery Island
. All the synth sounds were programmed on Reason's Malstrom Synth.