| Used Operating Systems |
| 1 | 16159 | 52.14 | 221 | 4.68 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 4733 | 15.27 | 1278 | 27.08 | Windows NT |
| 3 | 4023 | 12.98 | 1549 | 32.82 | +http://www.baidu.com/search/spider.html |
| 4 | 2383 | 7.69 | 852 | 18.05 | +http://www.google.com/bot.html |
| 5 | 1326 | 4.28 | 318 | 6.74 | +http://www.bing.com/bingbot.htm |
| 6 | 461 | 1.49 | 58 | 1.23 | +http://yandex.com/bots |
| 7 | 395 | 1.27 | 78 | 1.65 | http://www.opensiteexplorer.org/dotbot, ... |
| 8 | 375 | 1.21 | 107 | 2.27 | +http://www.linkdex.com/bots/ |
| 9 | 279 | 0.90 | 73 | 1.55 | +http://ahrefs.com/robot/ |
| 10 | 209 | 0.67 | 26 | 0.55 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 134 | 0.43 | 23 | 0.49 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 117 | 0.38 | 36 | 0.76 | +http://www.exabot.com/go/robot |
| 13 | 70 | 0.23 | 6 | 0.13 | +http://help.coccoc.com/ |
| 14 | 53 | 0.17 | 15 | 0.32 | Windows 98 |
| 15 | 45 | 0.15 | 13 | 0.28 | Windows 95 |
| 16 | 30 | 0.10 | 8 | 0.17 | Windows 3.1 |
| 17 | 21 | 0.07 | 7 | 0.15 | ) - BrowseX (2.0.0 Windows |
| 18 | 16 | 0.05 | 0 | 0.00 | MSIE 5.5; Windows NT 5.1 |
| 19 | 16 | 0.05 | 0 | 0.00 | Linux [unknown version] |
| 20 | 15 | 0.05 | 5 | 0.11 | Auto; Windows |
| 21 | 14 | 0.05 | 7 | 0.15 | http://crawler.sistrix.net/ |
| 22 | 14 | 0.05 | 2 | 0.04 | WinHttp.WinHttpRequest.5 |
| 23 | 10 | 0.03 | 3 | 0.06 | MSIE 5.5; Windows NT 5.0 |
| 24 | 9 | 0.03 | 4 | 0.08 | +http://OpenLinkProfiler.org/bot |
| 25 | 8 | 0.03 | 6 | 0.13 | +http://pmoz.info/doc/botinfo.htm |
| 26 | 8 | 0.03 | 1 | 0.02 | Linux i686 [unknown version] |
| 27 | 8 | 0.03 | 4 | 0.08 | +http://www.meanpath.com/meanpathbot.htm... |
| 28 | 6 | 0.02 | 2 | 0.04 | Windows ME |
| 29 | 6 | 0.02 | 3 | 0.06 | +http://botw.org |
| 30 | 5 | 0.02 | 2 | 0.04 | +info@netcraft.com |
| 31 | 5 | 0.02 | 1 | 0.02 | +http://freedlf.com/ |
| 32 | 4 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 33 | 4 | 0.01 | 2 | 0.04 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 34 | 4 | 0.01 | 1 | 0.02 | +http://fulltext.sblog.cz/ |
| 35 | 3 | 0.01 | 1 | 0.02 | Windows CE |
| 36 | 3 | 0.01 | 1 | 0.02 | Windows 2000 |
| 37 | 3 | 0.01 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 38 | 3 | 0.01 | 1 | 0.02 | http://crawler.007ac9.net/ |
| 39 | 3 | 0.01 | 1 | 0.02 | MSIE 5.5; Windows NT 4.0 |
| 40 | 2 | 0.01 | 0 | 0.00 | Linux 2.4.x |
| 41 | 2 | 0.01 | 0 | 0.00 | Windows Phone OS 7.5 |
| 42 | 2 | 0.01 | 1 | 0.02 | Linux i586 [unknown version] |
| 43 | 1 | 0.00 | 0 | 0.00 | documents; +http://docs.google.com |
| 44 | 1 | 0.00 | 0 | 0.00 | Win32 |
| 45 | 1 | 0.00 | 0 | 0.00 | AOL 9.7; AOLBuild 4343.1028; Windows NT ... |
| 46 | 1 | 0.00 | 1 | 0.02 | +http://www.linkpad.ru |
| 47 | 1 | 0.00 | 1 | 0.02 | Windows XP |
