| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 22685155 | 54.6 % | ||
 | Windows XP | 17414418 | 41.95 % |  |
 | Windows NT | 21158 | 0.05 % | |
 | Windows Me | 42645 | 0.10 % | |
 | Windows Vista (Longhorn) | 3810679 | 9.18 % | |
 | Windows CE | 21363 | 0.05 % | |
 | Windows 98 | 138093 | 0.33 % | |
 | Windows 95 | 2519 | 0.00 % | |
 | Windows 2003 | 455925 | 1.09 % | |
 | Windows 2000 | 777484 | 1.87 % | |
 | Windows 3.xx | 871 | 0.00 % | |
| BSD | 115692 | 0.2 % | ||
 | OpenBSD | 15632 | 0.03 % | |
 | NetBSD | 563 | 0.00 % | |
 | FreeBSD | 99472 | 0.23 % | |
 | DragonFly BSD | 25 | 0.00 % | |
| Linux | 15449852 | 37.2 % | ||
 | Zenwalk Linux | 83697 | 0.20 % | |
 | Xandros | 13607 | 0.03 % | |
 | Vine Linux | 21790 | 0.05 % | |
 | VectorLinux | 28604 | 0.06 % | |
 | Ubuntu | 1632749 | 3.93 % | |
 | openSUSE | 849130 | 2.04 % | |
 | StartCom Linux | 470 | 0.00 % | |
 | Sabayon Linux | 51 | 0.00 % | |
 | Red Hat | 39468 | 0.09 % | |
 | PCLinuxOS | 725622 | 1.74 % | |
 | Pardus Linux | 36665 | 0.08 % | |
 | Linux Mint | 658560 | 1.58 % | |
 | MEPIS Linux | 174633 | 0.42 % | |
 | Mandriva Linux | 646783 | 1.55 % | |
 | Linspire | 2045 | 0.00 % | |
 | Kubuntu | 134506 | 0.32 % | |
 | KateOS | 166 | 0.00 % | |
 | KANOTIX | 14 | 0.00 % | |
 | JackLab Audio Distribution | 502 | 0.00 % | |
 | Granular Linux | 8243 | 0.01 % | |
 | Gentoo Linux | 25661 | 0.06 % | |
 | Frugalware Linux | 2473 | 0.00 % | |
 | Freespire | 18907 | 0.04 % | |
 | Fluxbuntu | 12 | 0.00 % | |
 | Fedora | 814772 | 1.96 % | |
 | Elive | 18538 | 0.04 % | |
 | Debian GNU/Linux | 1425624 | 3.43 % | |
 | CentOS | 56348 | 0.13 % | |
 | BLAG Linux | 781 | 0.00 % | |
 | Arch Linux | 315 | 0.00 % | |
 | GNU Linux (Unknown or unspecified distribution) | 8029116 | 19.34 % | |
| Macintosh | 1259726 | 3 % | ||
 | Mac OS X | 1250798 | 3.01 % | |
 | Mac OS | 8928 | 0.02 % | |
| Others | 1995024 | 4.8 % | ||
 | Unknown | 1919340 | 4.6 % | |
 | Sun Solaris | 63045 | 0.1 % | |
 | Symbian OS | 7545 | 0 % | |
 | Unknown Unix system | 2052 | 0 % | |
 | OS/2 | 1377 | 0 % | |
 | BeOS | 518 | 0 % | |
 | Irix | 365 | 0 % | |
 | HP UX | 265 | 0 % | |
 | AmigaOS | 215 | 0 % | |
 | CPM | 215 | 0 % | |
 | Atari | 65 | 0 % | |
 | Aix | 17 | 0 % | |
 | RISC OS | 5 | 0 % | |