| Used Operating Systems |
| 1 | 6602 | 59.93 | 158 | 10.06 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 2080 | 18.88 | 774 | 49.27 | Windows NT |
| 3 | 831 | 7.54 | 325 | 20.69 | +http://www.baidu.com/search/spider.html |
| 4 | 591 | 5.36 | 109 | 6.94 | +http://www.bing.com/bingbot.htm |
| 5 | 463 | 4.20 | 75 | 4.77 | +http://www.google.com/bot.html |
| 6 | 147 | 1.33 | 39 | 2.48 | +http://www.linkdex.com/bots/ |
| 7 | 57 | 0.52 | 20 | 1.27 | Windows XP |
| 8 | 51 | 0.46 | 8 | 0.51 | http://help.yahoo.com/help/us/ysearch/sl... |
| 9 | 36 | 0.33 | 16 | 1.02 | Windows 98 |
| 10 | 32 | 0.29 | 9 | 0.57 | +http://yandex.com/bots |
| 11 | 28 | 0.25 | 1 | 0.06 | +http://megaindex.com/crawler |
| 12 | 21 | 0.19 | 11 | 0.70 | Windows 95 |
| 13 | 13 | 0.12 | 5 | 0.32 | Windows ME |
| 14 | 10 | 0.09 | 4 | 0.25 | Windows 3.1 |
| 15 | 8 | 0.07 | 6 | 0.38 | Windows CE |
| 16 | 8 | 0.07 | 4 | 0.25 | +info@netcraft.com |
| 17 | 8 | 0.07 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 18 | 7 | 0.06 | 3 | 0.19 | MSIE 5.5; Windows NT 5.0 |
| 19 | 6 | 0.05 | 0 | 0.00 | +http://ahrefs.com/robot/ |
| 20 | 4 | 0.04 | 1 | 0.06 | +http://www.semrush.com/bot.html |
| 21 | 3 | 0.03 | 1 | 0.06 | Windows 2000 |
| 22 | 3 | 0.03 | 1 | 0.06 | Linux [unknown version] |
| 23 | 3 | 0.03 | 0 | 0.00 | +http://www.xovibot.net/ |
| 24 | 2 | 0.02 | 0 | 0.00 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 25 | 2 | 0.02 | 1 | 0.06 | +http://www.meanpath.com/meanpathbot.htm... |
| 26 | 1 | 0.01 | 0 | 0.00 | +http://ahrfs.com/root/ |
