| Used Operating Systems |
| 1 | 15932 | 67.20 | 12 | 0.63 | +http://megaindex.com/crawler |
| 2 | 3910 | 16.49 | 770 | 40.34 | Windows NT |
| 3 | 2636 | 11.12 | 808 | 42.33 | +http://www.baidu.com/search/spider.html |
| 4 | 500 | 2.11 | 2 | 0.10 | Linux i586 [unknown version] |
| 5 | 152 | 0.64 | 11 | 0.58 | +http://yandex.com/bots |
| 6 | 150 | 0.63 | 68 | 3.56 | +http://www.google.com/bot.html |
| 7 | 118 | 0.50 | 79 | 4.14 | Windows 95 |
| 8 | 105 | 0.44 | 23 | 1.20 | Windows 98 |
| 9 | 30 | 0.13 | 21 | 1.10 | Windows 2000 |
| 10 | 30 | 0.13 | 17 | 0.89 | Windows ME |
| 11 | 25 | 0.11 | 21 | 1.10 | Auto; Windows |
| 12 | 22 | 0.09 | 17 | 0.89 | Windows CE |
| 13 | 21 | 0.09 | 2 | 0.10 | Windows XP |
| 14 | 20 | 0.08 | 16 | 0.84 | MSIE 5.5; Windows NT 5.0 |
| 15 | 20 | 0.08 | 16 | 0.84 | ) - BrowseX (2.0.0 Windows |
| 16 | 17 | 0.07 | 15 | 0.79 | MSIE 5.5; Windows NT 4.0 |
| 17 | 14 | 0.06 | 11 | 0.58 | Windows 3.1 |
| 18 | 4 | 0.02 | 0 | 0.00 | +http://ahrefs.com/robot/ |
| 19 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 20 | 1 | 0.00 | 0 | 0.00 | X11 |
