| Used Operating Systems |
| 1 | 3670 | 48.06 | 2075 | 54.21 | Windows NT |
| 2 | 935 | 12.24 | 661 | 17.27 | +http://www.baidu.com/search/spider.html |
| 3 | 811 | 10.62 | 323 | 8.44 | +http://www.google.com/bot.html |
| 4 | 572 | 7.49 | 27 | 0.71 | http://www.majestic12.co.uk/bot.php?+ |
| 5 | 568 | 7.44 | 295 | 7.71 | +http://www.bing.com/bingbot.htm |
| 6 | 157 | 2.06 | 134 | 3.50 | Windows 95 |
| 7 | 110 | 1.44 | 25 | 0.65 | +http://yandex.com/bots |
| 8 | 86 | 1.13 | 32 | 0.84 | Windows 98 |
| 9 | 86 | 1.13 | 8 | 0.21 | +http://fulltext.sblog.cz/ |
| 10 | 71 | 0.93 | 30 | 0.78 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 64 | 0.84 | 22 | 0.57 | +http://www.exabot.com/go/robot |
| 12 | 48 | 0.63 | 8 | 0.21 | +http://www.semrush.com/bot.html |
| 13 | 48 | 0.63 | 2 | 0.05 | +http://webmeup-crawler.com/ |
| 14 | 29 | 0.38 | 3 | 0.08 | http://www.opensiteexplorer.org/dotbot, ... |
| 15 | 29 | 0.38 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 16 | 26 | 0.34 | 2 | 0.05 | +https://www.aihitdata.com/about |
| 17 | 24 | 0.31 | 2 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 18 | 22 | 0.29 | 3 | 0.08 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 19 | 22 | 0.29 | 20 | 0.52 | MSIE 5.5; Windows NT 5.0 |
| 20 | 21 | 0.27 | 19 | 0.50 | Windows CE |
| 21 | 21 | 0.27 | 5 | 0.13 | +http://www.findxbot.com |
| 22 | 19 | 0.25 | 8 | 0.21 | +http://ahrefs.com/robot/ |
| 23 | 18 | 0.24 | 15 | 0.39 | Windows ME |
| 24 | 17 | 0.22 | 16 | 0.42 | Windows 3.1 |
| 25 | 17 | 0.22 | 17 | 0.44 | MSIE 5.5; Windows NT 4.0 |
| 26 | 16 | 0.21 | 14 | 0.37 | Auto; Windows |
| 27 | 14 | 0.18 | 7 | 0.18 | +http://www.meanpath.com/meanpathbot.htm... |
| 28 | 13 | 0.17 | 1 | 0.03 | Windows XP |
| 29 | 13 | 0.17 | 5 | 0.13 | +http://www.xovibot.net/ |
| 30 | 13 | 0.17 | 13 | 0.34 | ) - BrowseX (2.0.0 Windows |
| 31 | 11 | 0.14 | 2 | 0.05 | Linux i586 [unknown version] |
| 32 | 10 | 0.13 | 1 | 0.03 | crawler@mixrank.com |
| 33 | 10 | 0.13 | 2 | 0.05 | +http://www.profound.net/domainappender |
| 34 | 8 | 0.10 | 8 | 0.21 | Windows 2000 |
| 35 | 8 | 0.10 | 8 | 0.21 | +http://domainsigma.com/robot |
| 36 | 4 | 0.05 | 0 | 0.00 | http://www.tkl.iis.u-tokyo.ac.jp/~crawle... |
| 37 | 4 | 0.05 | 3 | 0.08 | http://www.bing.com/bingbot.htm |
| 38 | 4 | 0.05 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 39 | 3 | 0.04 | 3 | 0.08 | Linux i686 [unknown version] |
| 40 | 2 | 0.03 | 2 | 0.05 | +http://www.seograph.net/bot.html |
| 41 | 2 | 0.03 | 2 | 0.05 | PPC Mac OS X Mach-O |
| 42 | 2 | 0.03 | 0 | 0.00 | Android 2.3.5 |
| 43 | 2 | 0.03 | 1 | 0.03 | +info@netcraft.com |
| 44 | 2 | 0.03 | 1 | 0.03 | ScoutJet; +http://blekko.com/about/blekk... |
| 45 | 2 | 0.03 | 0 | 0.00 | +http://siteexplorer.info/ |
| 46 | 1 | 0.01 | 1 | 0.03 | Windows Phone OS 7.5 |
| 47 | 1 | 0.01 | 1 | 0.03 | http://nmap.org/book/nse.html |
| 48 | 1 | 0.01 | 1 | 0.03 | X11 |
