| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 4883425 | 49.9 % | ||
 | Windows XP | 3168341 | 32.4 % |  |
 | Windows NT | 429341 | 4.3 % | |
 | Windows Me | 3572 | 0 % | |
 | Windows Vista (Longhorn) | 1095660 | 11.2 % | |
 | Windows CE | 3988 | 0 % | |
 | Windows 98 | 13970 | 0.1 % | |
 | Windows 95 | 337 | 0 % | |
 | Windows 2003 | 88008 | 0.9 % | |
 | Windows 2000 | 80061 | 0.8 % | |
 | Windows 3.xx | 147 | 0 % | |
| BSD | 20289 | 0.2 % | ||
 | OpenBSD | 1710 | 0 % | |
 | NetBSD | 355 | 0 % | |
 | FreeBSD | 18224 | 0.1 % | |
| Linux | 4047765 | 41.4 % | ||
 | Zenwalk Linux | 12741 | 0.1 % | |
 | Xubuntu | 71 | 0 % | |
 | Vine Linux | 3604 | 0 % | |
 | VectorLinux | 9914 | 0.1 % | |
 | Ubuntu | 1501666 | 15.3 % | |
 | openSUSE | 159535 | 1.6 % | |
 | Sabayon Linux | 27882 | 0.2 % | |
 | Red Hat | 10575 | 0.1 % | |
 | Puppy Linux | 45 | 0 % | |
 | PCLinuxOS | 150644 | 1.5 % | |
 | Pardus Linux | 19053 | 0.1 % | |
 | Linux Mint | 398977 | 4 % | |
 | MEPIS Linux | 4238 | 0 % | |
 | Mandriva Linux | 134098 | 1.3 % | |
 | Kubuntu | 3416 | 0 % | |
 | Granular Linux | 308 | 0 % | |
 | Gentoo Linux | 51051 | 0.5 % | |
 | Fedora | 197625 | 2 % | |
 | Elive | 3898 | 0 % | |
 | Debian GNU/Linux | 256826 | 2.6 % | |
 | CentOS | 23326 | 0.2 % | |
 | GNU Linux (Unknown or unspecified distribution) | 1078272 | 11 % | |
| Macintosh | 373446 | 3.8 % | ||
 | Mac OS X | 370983 | 3.7 % | |
 | Mac OS | 2463 | 0 % | |
| Others | 449126 | 4.5 % | ||
 | Unknown | 434458 | 4.4 % | |
 | Sun Solaris | 9851 | 0.1 % | |
 | Symbian OS | 3291 | 0 % | |
 | Unknown Unix system | 890 | 0 % | |
 | OS/2 | 306 | 0 % | |
 | BeOS | 150 | 0 % | |
 | VMS | 81 | 0 % | |
 | AmigaOS | 50 | 0 % | |
 | Aix | 43 | 0 % | |
 | CPM | 6 | 0 % | |