| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 21461 | 35.2 % | ||
 | Windows XP | 11265 | 18.5 % |  |
 | Windows NT | 765 | 1.2 % | |
 | Windows ME | 315 | 0.5 % | |
 | Windows Vista (LongHorn) | 753 | 1.2 % | |
 | Windows Mobile | 132 | 0.2 % | |
 | Windows 98 | 256 | 0.4 % | |
 | Windows 95 | 347 | 0.5 % | |
 | Windows 2008 | 4303 | 7 % | |
 | Windows 2003 | 1574 | 2.5 % | |
 | Windows 2000 | 1643 | 2.6 % | |
 | Windows 3.xx | 108 | 0.1 % | |
| BSD | 889 | 1.4 % | ||
 | OpenBSD | 79 | 0.1 % | |
 | NetBSD | 26 | 0 % | |
 | FreeBSD | 784 | 1.2 % | |
| Linux | 35272 | 57.9 % | ||
 | Ubuntu | 6520 | 10.7 % | |
 | Suse | 472 | 0.7 % | |
 | Red Hat | 39 | 0 % | |
 | Mandriva (or Mandrake) | 140 | 0.2 % | |
 | Gentoo | 1036 | 1.7 % | |
 | Fedora | 721 | 1.1 % | |
 | Debian | 386 | 0.6 % | |
 | Centos | 172 | 0.2 % | |
 | GNU Linux (Unknown or unspecified distribution) | 25786 | 42.3 % | |
| Macintosh | 1843 | 3 % | ||
 | Mac OS X | 1842 | 3 % | |
 | Mac OS | 1 | 0 % | |
| Others | 1392 | 2.2 % | ||
 | Unknown | 1308 | 2.1 % | |
 | Unknown Unix system | 38 | 0 % | |
 | Sun Solaris | 33 | 0 % | |
 | Symbian OS | 13 | 0 % | |