| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 67782360 | 80.5 % | ||
 | Windows XP | 26535945 | 31.5 % |  |
 | Windows Vista | 654 | 0 % | |
 | Windows (unknown version) | 8762 | 0 % | |
 | Windows NT | 19084 | 0 % | |
 | Windows ME | 2294 | 0 % | |
 | Windows Vista (LongHorn) | 12562162 | 14.9 % | |
 | Windows Mobile | 1199 | 0 % | |
 | Windows 98 | 16492 | 0 % | |
 | Windows 95 | 547 | 0 % | |
 | Windows 2008 | 28137053 | 33.4 % | |
 | Windows 2003 | 244638 | 0.2 % | |
 | Windows 2000 | 253385 | 0.3 % | |
 | Windows 3.xx | 145 | 0 % | |
| BSD | 25898 | 0 % | ||
 | OpenBSD | 988 | 0 % | |
 | NetBSD | 190 | 0 % | |
 | GNU/kFreeBSD | 290 | 0 % | |
 | FreeBSD | 24430 | 0 % | |
| Linux | 8304514 | 9.8 % | ||
 | Ubuntu | 4540612 | 5.3 % | |
 | Suse | 275951 | 0.3 % | |
 | Red Hat | 23357 | 0 % | |
 | Mandriva (or Mandrake) | 107848 | 0.1 % | |
 | Gentoo | 40695 | 0 % | |
 | Fedora | 253953 | 0.3 % | |
 | Debian | 137970 | 0.1 % | |
 | Centos | 32198 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 2891930 | 3.4 % | |
| Macintosh | 7449700 | 8.8 % | ||
 | Mac OS X | 7449465 | 8.8 % | |
 | Mac OS | 235 | 0 % | |
| Others | 630450 | 0.7 % | ||
 | Unknown | 604259 | 0.7 % | |
 | Sun Solaris | 17306 | 0 % | |
 | OS/2 | 2840 | 0 % | |
 | Symbian OS | 2552 | 0 % | |
 | Unknown Unix system | 2442 | 0 % | |
 | CPM | 373 | 0 % | |
 | Nintendo Wii | 364 | 0 % | |
 | Commodore 64 | 125 | 0 % | |
 | BeOS | 95 | 0 % | |
 | HP UX | 49 | 0 % | |
 | Sony PlayStation Portable | 34 | 0 % | |
 | AmigaOS | 5 | 0 % | |
 | RISC OS | 4 | 0 % | |
 | Irix | 2 | 0 % | |