| Used Operating Systems |
| 1 | 35108 | 42.62 | 281 | 1.42 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 20652 | 25.07 | 4221 | 21.32 | Windows NT |
| 3 | 17476 | 21.21 | 13137 | 66.36 | +http://www.baidu.com/search/spider.html |
| 4 | 2982 | 3.62 | 74 | 0.37 | +http://OpenLinkProfiler.org/bot |
| 5 | 1088 | 1.32 | 293 | 1.48 | +http://www.google.com/bot.html |
| 6 | 846 | 1.03 | 246 | 1.24 | +http://www.bing.com/bingbot.htm |
| 7 | 675 | 0.82 | 344 | 1.74 | Windows 95 |
| 8 | 553 | 0.67 | 104 | 0.53 | http://www.opensiteexplorer.org/dotbot, ... |
| 9 | 478 | 0.58 | 20 | 0.10 | Windows 98 |
| 10 | 443 | 0.54 | 105 | 0.53 | +http://yandex.com/bots |
| 11 | 252 | 0.31 | 138 | 0.70 | +http://ahrefs.com/robot/ |
| 12 | 235 | 0.29 | 72 | 0.36 | +http://www.linkdex.com/bots/ |
| 13 | 133 | 0.16 | 85 | 0.43 | MSIE 5.5; Windows NT 4.0 |
| 14 | 131 | 0.16 | 55 | 0.28 | Windows ME |
| 15 | 124 | 0.15 | 79 | 0.40 | MSIE 5.5; Windows NT 5.0 |
| 16 | 122 | 0.15 | 82 | 0.41 | Windows CE |
| 17 | 121 | 0.15 | 79 | 0.40 | ) - BrowseX (2.0.0 Windows |
| 18 | 117 | 0.14 | 50 | 0.25 | Windows 3.1 |
| 19 | 110 | 0.13 | 75 | 0.38 | Windows 2000 |
| 20 | 110 | 0.13 | 67 | 0.34 | Auto; Windows |
| 21 | 110 | 0.13 | 1 | 0.01 | Windows XP |
| 22 | 95 | 0.12 | 24 | 0.12 | http://help.yahoo.com/help/us/ysearch/sl... |
| 23 | 89 | 0.11 | 46 | 0.23 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 24 | 72 | 0.09 | 36 | 0.18 | +http://help.coccoc.com/ |
| 25 | 59 | 0.07 | 2 | 0.01 | +http://www.semrush.com/bot.html |
| 26 | 47 | 0.06 | 20 | 0.10 | +http://www.exabot.com/go/robot |
| 27 | 36 | 0.04 | 10 | 0.05 | X11 |
| 28 | 33 | 0.04 | 13 | 0.07 | Linux i686 [unknown version] |
| 29 | 19 | 0.02 | 3 | 0.02 | PPC Mac OS X Mach-O |
| 30 | 11 | 0.01 | 10 | 0.05 | +info@netcraft.com |
| 31 | 10 | 0.01 | 5 | 0.03 | Linux [unknown version] |
| 32 | 10 | 0.01 | 5 | 0.03 | +http://www.meanpath.com/meanpathbot.htm... |
| 33 | 6 | 0.01 | 6 | 0.03 | +http://domainsigma.com/robot |
| 34 | 5 | 0.01 | 0 | 0.00 | Android 2.3.5 |
| 35 | 4 | 0.00 | 0 | 0.00 | +http://webmeup-crawler.com/ |
| 36 | 3 | 0.00 | 2 | 0.01 | http://www.bing.com/bingbot.htm |
| 37 | 3 | 0.00 | 1 | 0.01 | +http://www.profound.net/domainappender |
| 38 | 2 | 0.00 | 0 | 0.00 | http://www.tkl.iis.u-tokyo.ac.jp/~crawle... |
| 39 | 2 | 0.00 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 40 | 2 | 0.00 | 1 | 0.01 | +http://duckduckgo.com |
| 41 | 1 | 0.00 | 1 | 0.01 | +http://www.seograph.net/bot.html |
| 42 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 43 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
| 44 | 1 | 0.00 | 1 | 0.01 | Linux i586 [unknown version] |
| 45 | 1 | 0.00 | 1 | 0.01 | +http://www.wmtips.com/tools/ |
| 46 | 1 | 0.00 | 0 | 0.00 | +http://www.xovibot.net/ |
