| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 38504212 | 68.1 % | ||
 | Windows XP | 22182094 | 39.2 % |  |
 | Windows NT | 12299751 | 21.7 % | |
 | Windows Me | 23223 | 0 % | |
 | Windows Vista (Longhorn) | 2894236 | 5.1 % | |
 | Windows CE | 32794 | 0 % | |
 | Windows 98 | 79679 | 0.1 % | |
 | Windows 95 | 2573 | 0 % | |
 | Windows 2003 | 599161 | 1 % | |
 | Windows 2000 | 390244 | 0.6 % | |
 | Windows 3.xx | 457 | 0 % | |
| BSD | 233351 | 0.4 % | ||
 | OpenBSD | 25985 | 0 % | |
 | NetBSD | 8179 | 0 % | |
 | GNU/kFreeBSD | 868 | 0 % | |
 | FreeBSD | 198319 | 0.3 % | |
| Linux | 11038726 | 19.5 % | ||
 | Zenwalk Linux | 69515 | 0.1 % | |
 | Xubuntu | 706 | 0 % | |
 | Vine Linux | 17731 | 0 % | |
 | VectorLinux | 55622 | 0 % | |
 | Ubuntu | 252881 | 0.4 % | |
 | openSUSE | 1219839 | 2.1 % | |
 | StartCom Linux | 173 | 0 % | |
 | Sabayon Linux | 178998 | 0.3 % | |
 | Red Hat | 82763 | 0.1 % | |
 | Puppy Linux | 38 | 0 % | |
 | PCLinuxOS | 907075 | 1.6 % | |
 | Pardus Linux | 125731 | 0.2 % | |
 | Linux Mint | 3724565 | 6.5 % | |
 | MEPIS Linux | 12207 | 0 % | |
 | Mandriva Linux | 905156 | 1.6 % | |
 | Kubuntu | 8987 | 0 % | |
 | KateOS | 367 | 0 % | |
 | Granular Linux | 2962 | 0 % | |
 | Gentoo Linux | 170954 | 0.3 % | |
 | Fedora | 1259695 | 2.2 % | |
 | Elive | 58975 | 0.1 % | |
 | Debian GNU/Linux | 1012991 | 1.7 % | |
 | CentOS | 139767 | 0.2 % | |
 | Arch Linux | 275 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 830753 | 1.4 % | |
| Macintosh | 3033721 | 5.3 % | ||
 | Mac OS X | 3028800 | 5.3 % | |
 | Mac OS | 4921 | 0 % | |
| Others | 3694183 | 6.5 % | ||
 | Unknown | 3575955 | 6.3 % | |
 | Sun Solaris | 74462 | 0.1 % | |
 | Symbian OS | 33420 | 0 % | |
 | Unknown Unix system | 3537 | 0 % | |
 | BeOS | 3403 | 0 % | |
 | OS/2 | 2662 | 0 % | |
 | Aix | 328 | 0 % | |
 | WebTV | 262 | 0 % | |
 | AmigaOS | 81 | 0 % | |
 | Irix | 49 | 0 % | |
 | OSF Unix | 16 | 0 % | |
 | RISC OS | 4 | 0 % | |
 | HP UX | 4 | 0 % | |