Windows:
Windows 2000, XP Home, XP Pro, 2003 Server, Vista

Mac:
Mac OS X 10.4 or higher (Power PC G4/G5 or Intel processor)

Windows
Windows 2000, Server 2003, XP or Vista, Windows 7

Mac (participant role with restricted functionality)
Mac OS X 10.4+

Linux (participant role only) via netviewer meet web-based client

Windows:
Windows 2000, XP, 2003, 32-bit Vista, 64-bit Vista

Mac:
Mac OS X 10.4+

Linux:
Ubuntu 9.04, Red Hat 5, Open SuSE 11.1, Fedora 11

Other:
Solaris 10, HP-UX 11.11, AIX 5.3

Windows
Windows XP with SP 2, 2000 with SP 4, Server 2003 with SP 1, or Vista

For VoIP: sound card, speaker, and computer microphone

Mac (Microsoft Web Access 2007)
Mac OS X 10.3 with Safari 1.3 and Apple Java 1.4.2;
Mac OS X 10.4 with Safari 2.0 and Apple Java 1.4.2

Solaris (Microsoft Web Access 2007)
Solaris 10 with Mozilla Firefox 1.7 and Sun 1.5.x

Windows
Windows 2000, Server 2003, XP or Vista

Mac
Mac OS X 10.4+