| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 11316174 | 50.9 % | ||
 | Windows XP | 6797344 | 30.6 % |  |
 | Windows NT | 2227173 | 10 % | |
 | Windows Me | 5906 | 0 % | |
 | Windows Vista (Longhorn) | 1936968 | 8.7 % | |
 | Windows CE | 6387 | 0 % | |
 | Windows 98 | 26026 | 0.1 % | |
 | Windows 95 | 476 | 0 % | |
 | Windows 2003 | 181211 | 0.8 % | |
 | Windows 2000 | 133901 | 0.6 % | |
 | Windows 3.xx | 782 | 0 % | |
| BSD | 50975 | 0.2 % | ||
 | OpenBSD | 5893 | 0 % | |
 | NetBSD | 651 | 0 % | |
 | GNU/kFreeBSD | 121 | 0 % | |
 | FreeBSD | 44310 | 0.1 % | |
| Linux | 9142322 | 41.1 % | ||
 | Zenwalk Linux | 25971 | 0.1 % | |
 | Xubuntu | 251 | 0 % | |
 | Vine Linux | 5126 | 0 % | |
 | VectorLinux | 16844 | 0 % | |
 | Ubuntu | 3671020 | 16.5 % | |
 | openSUSE | 360016 | 1.6 % | |
 | Sabayon Linux | 72487 | 0.3 % | |
 | Red Hat | 22937 | 0.1 % | |
 | Puppy Linux | 165 | 0 % | |
 | PCLinuxOS | 226447 | 1 % | |
 | Pardus Linux | 31659 | 0.1 % | |
 | Linux Mint | 766656 | 3.4 % | |
 | MEPIS Linux | 6639 | 0 % | |
 | Mandriva Linux | 409647 | 1.8 % | |
 | Kubuntu | 4282 | 0 % | |
 | Granular Linux | 738 | 0 % | |
 | Gentoo Linux | 75525 | 0.3 % | |
 | Fedora | 353325 | 1.5 % | |
 | Elive | 6815 | 0 % | |
 | Debian GNU/Linux | 477312 | 2.1 % | |
 | CentOS | 51298 | 0.2 % | |
 | BLAG Linux | 64 | 0 % | |
 | Arch Linux | 15 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 2557083 | 11.5 % | |
| Macintosh | 836454 | 3.7 % | ||
 | Mac OS X | 835334 | 3.7 % | |
 | Mac OS | 1120 | 0 % | |
| Others | 851410 | 3.8 % | ||
 | Unknown | 819947 | 3.6 % | |
 | Sun Solaris | 19653 | 0 % | |
 | Symbian OS | 9147 | 0 % | |
 | BeOS | 982 | 0 % | |
 | Unknown Unix system | 830 | 0 % | |
 | OS/2 | 533 | 0 % | |
 | VMS | 138 | 0 % | |
 | Aix | 66 | 0 % | |
 | HP UX | 58 | 0 % | |
 | AmigaOS | 54 | 0 % | |
 | CPM | 2 | 0 % | |