| バージョン | 件数 | パーセント | ||
|---|---|---|---|---|
| WIN | 536836 | 54.9 % | ||
 | Windows XP | 437841 | 44.7 % |  |
 | Windows NT | 2172 | 0.2 % | |
 | Windows Me | 18594 | 1.9 % | |
 | Windows Codename Longhorn | 4854 | 0.4 % | |
 | Windows CE | 301 | 0 % | |
 | Windows 98 | 18465 | 1.8 % | |
 | Windows 95 | 297 | 0 % | |
 | Windows 2003 | 825 | 0 % | |
 | Windows 2000 | 53487 | 5.4 % | |
| MAC | 15449 | 1.5 % | ||
 | Mac OS X | 10361 | 1 % | |
 | Mac OS | 5088 | 0.5 % | |
| その他 | 425341 | 43.5 % | ||
 | 不明 | 424854 | 43.4 % | |
 | Linux | 411 | 0 % | |
 | OpenBSD | 22 | 0 % | |
 | Sun Solaris | 16 | 0 % | |
 | FreeBSD | 14 | 0 % | |
 | CPM | 8 | 0 % | |
 | Symbian OS | 6 | 0 % | |
 | Unknown Unix system | 4 | 0 % | |
 | OS/2 | 2 | 0 % | |
 | AmigaOS | 2 | 0 % | |
 | BeOS | 2 | 0 % | |