| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 31201676 | 43.3 % | ||
 | Windows XP | 6330536 | 8.7 % |  |
 | Windows Vista | 4319813 | 5.9 % | |
 | Windows (unknown version) | 182954 | 0.2 % | |
 | Windows NT | 8237 | 0 % | |
 | Windows ME | 962 | 0 % | |
 | Windows Vista (LongHorn) | 986073 | 1.3 % | |
 | Windows Mobile | 6144 | 0 % | |
 | Windows 98 | 31905 | 0 % | |
 | Windows 95 | 1111 | 0 % | |
 | Windows 2008 | 19110579 | 26.5 % | |
 | Windows 2003 | 160926 | 0.2 % | |
 | Windows 2000 | 61820 | 0 % | |
 | Windows 3.xx | 616 | 0 % | |
| BSD | 152011 | 0.2 % | ||
 | OpenBSD | 20775 | 0 % | |
 | NetBSD | 5940 | 0 % | |
 | GNU/kFreeBSD | 731 | 0 % | |
 | FreeBSD | 124565 | 0.1 % | |
| Linux | 33003851 | 45.8 % | ||
 | Zenwalk GNU Linux | 1043 | 0 % | |
 | Vine Linux | 733 | 0 % | |
 | VectorLinux | 1979 | 0 % | |
 | Ubuntu | 2441545 | 3.3 % | |
 | Suse | 93939 | 0.1 % | |
 | Red Hat | 8877 | 0 % | |
 | PCLinuxOS | 6696 | 0 % | |
 | Momonga Linux | 176 | 0 % | |
 | Mandriva (or Mandrake) | 10324 | 0 % | |
 | Gentoo | 7998 | 0 % | |
 | Fedora | 21423 | 0 % | |
 | Debian | 85977 | 0.1 % | |
 | Centos | 7533 | 0 % | |
 | ASPLinux | 75 | 0 % | |
 | Google Android | 1418626 | 1.9 % | |
 | GNU Linux (Unknown or unspecified distribution) | 28896907 | 40.1 % | |
| Macintosh | 4140104 | 5.7 % | ||
 | Mac OS X | 4131728 | 5.7 % | |
 | Mac OS | 8376 | 0 % | |
| Others | 3542960 | 4.9 % | ||
 | Unknown | 3251744 | 4.5 % | |
 | Unknown Unix system | 109915 | 0.1 % | |
 | Java Mobile | 88394 | 0.1 % | |
 | BlackBerry | 39144 | 0 % | |
 | Symbian OS | 17013 | 0 % | |
 | Java | 13440 | 0 % | |
 | Sun Solaris | 13307 | 0 % | |
 | Nintendo Wii | 3105 | 0 % | |
 | Sony PlayStation | 2682 | 0 % | |
 | OS/2 | 952 | 0 % | |
 | BeOS | 664 | 0 % | |
 | AmigaOS | 656 | 0 % | |
 | Syllable | 539 | 0 % | |
 | iPhone OS (iPhone/iPod) | 335 | 0 % | |
 | CP/M | 323 | 0 % | |
 | RISC OS | 318 | 0 % | |
 | GNU Hurd | 122 | 0 % | |
 | Inferno | 100 | 0 % | |
 | Irix | 78 | 0 % | |
 | Aix | 69 | 0 % | |
 | HP UX | 52 | 0 % | |
 | Commodore 64 | 8 | 0 % | |