| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 32860308 | 51.2 % | ||
 | Windows XP | 19657924 | 30.6 % |  |
 | Windows NT | 6726075 | 10.4 % | |
 | Windows Me | 18379 | 0 % | |
 | Windows Vista (Longhorn) | 5449477 | 8.4 % | |
 | Windows CE | 17356 | 0 % | |
 | Windows 98 | 77321 | 0.1 % | |
 | Windows 95 | 882 | 0 % | |
 | Windows 2003 | 520453 | 0.8 % | |
 | Windows 2000 | 390803 | 0.6 % | |
 | Windows 3.xx | 1638 | 0 % | |
| BSD | 147773 | 0.2 % | ||
 | OpenBSD | 16856 | 0 % | |
 | NetBSD | 2754 | 0 % | |
 | GNU/kFreeBSD | 121 | 0 % | |
 | FreeBSD | 128042 | 0.1 % | |
| Linux | 26138285 | 40.7 % | ||
 | Zenwalk Linux | 71333 | 0.1 % | |
 | Xubuntu | 526 | 0 % | |
 | Vine Linux | 14699 | 0 % | |
 | VectorLinux | 62117 | 0 % | |
 | Ubuntu | 10046904 | 15.6 % | |
 | openSUSE | 1323059 | 2 % | |
 | Sabayon Linux | 127932 | 0.1 % | |
 | Red Hat | 65316 | 0.1 % | |
 | Puppy Linux | 428 | 0 % | |
 | PCLinuxOS | 646978 | 1 % | |
 | Pardus Linux | 92612 | 0.1 % | |
 | Linux Mint | 2249376 | 3.5 % | |
 | MEPIS Linux | 19431 | 0 % | |
 | Mandriva Linux | 1099559 | 1.7 % | |
 | Kubuntu | 13910 | 0 % | |
 | KateOS | 38 | 0 % | |
 | KANOTIX | 36 | 0 % | |
 | Granular Linux | 2908 | 0 % | |
 | Gentoo Linux | 274469 | 0.4 % | |
 | Fedora | 1126944 | 1.7 % | |
 | Elive | 15532 | 0 % | |
 | Debian GNU/Linux | 1419802 | 2.2 % | |
 | CentOS | 141053 | 0.2 % | |
 | BLAG Linux | 124 | 0 % | |
 | Arch Linux | 146 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 7323053 | 11.4 % | |
| Macintosh | 2447241 | 3.8 % | ||
 | Mac OS X | 2443767 | 3.8 % | |
 | Mac OS | 3474 | 0 % | |
| Others | 2557234 | 3.9 % | ||
 | Unknown | 2464647 | 3.8 % | |
 | Sun Solaris | 58276 | 0 % | |
 | Symbian OS | 26909 | 0 % | |
 | Unknown Unix system | 2588 | 0 % | |
 | BeOS | 1766 | 0 % | |
 | OS/2 | 1737 | 0 % | |
 | VMS | 344 | 0 % | |
 | HP UX | 315 | 0 % | |
 | Aix | 313 | 0 % | |
 | AmigaOS | 252 | 0 % | |
 | Irix | 47 | 0 % | |
 | CPM | 40 | 0 % | |