| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 21832 | 37.3 % | ||
 | Windows XP | 11996 | 20.5 % |  |
 | Windows (unknown version) | 2 | 0 % | |
 | Windows NT | 784 | 1.3 % | |
 | Windows ME | 468 | 0.8 % | |
 | Windows Vista (LongHorn) | 740 | 1.2 % | |
 | Windows Mobile | 83 | 0.1 % | |
 | Windows 98 | 176 | 0.3 % | |
 | Windows 95 | 411 | 0.7 % | |
 | Windows 2008 | 4476 | 7.6 % | |
 | Windows 2003 | 1098 | 1.8 % | |
 | Windows 2000 | 1524 | 2.6 % | |
 | Windows 3.xx | 74 | 0.1 % | |
| BSD | 1256 | 2.1 % | ||
 | OpenBSD | 36 | 0 % | |
 | NetBSD | 28 | 0 % | |
 | FreeBSD | 1192 | 2 % | |
| Linux | 32332 | 55.3 % | ||
 | Ubuntu | 7434 | 12.7 % | |
 | Suse | 451 | 0.7 % | |
 | Red Hat | 98 | 0.1 % | |
 | Mandriva (or Mandrake) | 118 | 0.2 % | |
 | Gentoo | 1296 | 2.2 % | |
 | Fedora | 786 | 1.3 % | |
 | Debian | 475 | 0.8 % | |
 | Centos | 65 | 0.1 % | |
 | GNU Linux (Unknown or unspecified distribution) | 21609 | 36.9 % | |
| Macintosh | 1559 | 2.6 % | ||
 | Mac OS X | 1559 | 2.6 % | |
| Others | 1487 | 2.5 % | ||
 | Unknown | 1304 | 2.2 % | |
 | Sun Solaris | 137 | 0.2 % | |
 | Unknown Unix system | 33 | 0 % | |
 | Symbian OS | 13 | 0 % | |