I wouldn't call it an extensive collection but it is varied:
Sparc Station 2 - Solaris 2.6
Ultrasparc 10 - SuSE Linux 7
Centris 610 (68k Mac) - Mac OS 8
Gateway P3C laptop (pentium-120) - Windows 95
Toshiba laptop (pentium-120) - Redhat 7
iBook/700 - OS X 10.2
Dell XPS-266
Atari 800
Atari PC-1...
