| Used Operating Systems |
| 1 | 27485 | 86.28 | 1080 | 54.22 | Windows NT |
| 2 | 2581 | 8.10 | 396 | 19.88 | +http://www.google.com/bot.html |
| 3 | 478 | 1.50 | 6 | 0.30 | Intel Mac OS X 10.6 |
| 4 | 272 | 0.85 | 48 | 2.41 | http://help.yahoo.com/help/us/ysearch/sl... |
| 5 | 172 | 0.54 | 45 | 2.26 | Windows 98 |
| 6 | 138 | 0.43 | 3 | 0.15 | Intel Mac OS X 10.5 |
| 7 | 92 | 0.29 | 54 | 2.71 | Windows 95 |
| 8 | 72 | 0.23 | 36 | 1.81 | +http://www.bing.com/bingbot.htm |
| 9 | 68 | 0.21 | 47 | 2.36 | Macintosh PPC |
| 10 | 66 | 0.21 | 46 | 2.31 | Linux [unknown version] |
| 11 | 62 | 0.19 | 45 | 2.26 | AmigaOS |
| 12 | 48 | 0.15 | 2 | 0.10 | PPC Mac OS X 10.4 |
| 13 | 30 | 0.09 | 15 | 0.75 | FreeBSD [unknown version] |
| 14 | 24 | 0.08 | 12 | 0.60 | +http://yandex.com/bots |
| 15 | 22 | 0.07 | 17 | 0.85 | BeOS |
| 16 | 20 | 0.06 | 7 | 0.35 | Windows ME |
| 17 | 18 | 0.06 | 2 | 0.10 | Windows 3.1 |
| 18 | 18 | 0.06 | 14 | 0.70 | Macintosh; U; PPC; Mac OS X |
| 19 | 16 | 0.05 | 13 | 0.65 | X11 |
| 20 | 14 | 0.04 | 10 | 0.50 | Chimera |
| 21 | 14 | 0.04 | 5 | 0.25 | Amiga OS |
| 22 | 12 | 0.04 | 9 | 0.45 | MSIE 5.5; Windows NT 4.0 |
| 23 | 11 | 0.03 | 0 | 0.00 | Windows XP |
| 24 | 10 | 0.03 | 4 | 0.20 | SaferSurf; DigExt |
| 25 | 10 | 0.03 | 8 | 0.40 | Darwin |
| 26 | 10 | 0.03 | 6 | 0.30 | Linux 2.4.x |
| 27 | 10 | 0.03 | 8 | 0.40 | DB OS 6.0 |
| 28 | 10 | 0.03 | 6 | 0.30 | MSIE 5.5; Windows NT 5.0 |
| 29 | 10 | 0.03 | 4 | 0.20 | ) - BrowseX (2.0.0 Windows |
| 30 | 10 | 0.03 | 5 | 0.25 | http://help.naver.com/customer_webtxt_02... |
| 31 | 8 | 0.03 | 7 | 0.35 | Windows 2000 |
| 32 | 7 | 0.02 | 7 | 0.35 | Windows CE |
| 33 | 6 | 0.02 | 0 | 0.00 | http://desktop.google.com/ |
| 34 | 6 | 0.02 | 6 | 0.30 | AmigaOS4.0 |
| 35 | 6 | 0.02 | 2 | 0.10 | MirrorDetector; +http://yandex.com/bots |
| 36 | 6 | 0.02 | 5 | 0.25 | Symbian OS/1.1.0 |
| 37 | 4 | 0.01 | 3 | 0.15 | OpenBSD [unknown version] |
| 38 | 4 | 0.01 | 3 | 0.15 | Auto; Windows |
| 39 | 2 | 0.01 | 2 | 0.10 | Win32 |
| 40 | 2 | 0.01 | 2 | 0.10 | Commodore 64 |
| 41 | 2 | 0.01 | 2 | 0.10 | Linux i686 [unknown version] |