| Used Operating Systems |
| 1 | 20239 | 67.70 | 219 | 4.97 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 4303 | 14.39 | 1854 | 42.04 | Windows NT |
| 3 | 1561 | 5.22 | 188 | 4.26 | +http://yandex.com/bots |
| 4 | 1411 | 4.72 | 896 | 20.32 | +http://www.baidu.com/search/spider.html |
| 5 | 951 | 3.18 | 596 | 13.51 | +http://www.google.com/bot.html |
| 6 | 287 | 0.96 | 19 | 0.43 | http://www.opensiteexplorer.org/dotbot, ... |
| 7 | 265 | 0.89 | 139 | 3.15 | +http://www.bing.com/bingbot.htm |
| 8 | 166 | 0.56 | 108 | 2.45 | +http://www.linkdex.com/bots/ |
| 9 | 105 | 0.35 | 75 | 1.70 | Windows 95 |
| 10 | 95 | 0.32 | 18 | 0.41 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 95 | 0.32 | 77 | 1.75 | +http://megaindex.com/crawler |
| 12 | 65 | 0.22 | 20 | 0.45 | Windows 98 |
| 13 | 29 | 0.10 | 5 | 0.11 | Windows XP |
| 14 | 28 | 0.09 | 13 | 0.29 | +http://www.exabot.com/go/robot |
| 15 | 26 | 0.09 | 20 | 0.45 | Windows ME |
| 16 | 23 | 0.08 | 13 | 0.29 | ) - BrowseX (2.0.0 Windows |
| 17 | 21 | 0.07 | 13 | 0.29 | MSIE 5.5; Windows NT 4.0 |
| 18 | 20 | 0.07 | 18 | 0.41 | MSIE 5.5; Windows NT 5.0 |
| 19 | 20 | 0.07 | 2 | 0.05 | +http://fulltext.sblog.cz/ |
| 20 | 18 | 0.06 | 13 | 0.29 | Windows 3.1 |
| 21 | 16 | 0.05 | 7 | 0.16 | +http://help.coccoc.com/ |
| 22 | 15 | 0.05 | 14 | 0.32 | Windows CE |
| 23 | 14 | 0.05 | 12 | 0.27 | Windows 2000 |
| 24 | 13 | 0.04 | 9 | 0.20 | +http://ahrefs.com/robot/ |
| 25 | 12 | 0.04 | 6 | 0.14 | +http://duckduckgo.com |
| 26 | 10 | 0.03 | 5 | 0.11 | +http://www.meanpath.com/meanpathbot.htm... |
| 27 | 9 | 0.03 | 8 | 0.18 | Auto; Windows |
| 28 | 8 | 0.03 | 4 | 0.09 | http://www.searchmetrics.com/en/searchme... |
| 29 | 8 | 0.03 | 8 | 0.18 | Linux i686 [unknown version] |
| 30 | 6 | 0.02 | 3 | 0.07 | http://help.yahoo.com/help/us/ysearch/sl... |
| 31 | 6 | 0.02 | 3 | 0.07 | +http://OpenLinkProfiler.org/bot |
| 32 | 6 | 0.02 | 2 | 0.05 | +http://www.semrush.com/bot.html |
| 33 | 6 | 0.02 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 34 | 6 | 0.02 | 6 | 0.14 | +http://domainsigma.com/robot |
| 35 | 4 | 0.01 | 2 | 0.05 | Mail.RU_Bot/Robots/2.0; +http://go.mail.... |
| 36 | 4 | 0.01 | 2 | 0.05 | +https://www.mojeek.com/bot.html |
| 37 | 3 | 0.01 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 38 | 2 | 0.01 | 1 | 0.02 | http://www.tkl.iis.u-tokyo.ac.jp/~crawle... |
| 39 | 2 | 0.01 | 2 | 0.05 | +http://www.seograph.net/bot.html |
| 40 | 2 | 0.01 | 1 | 0.02 | +http://gimmeusa-update.com/crawler |
| 41 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 42 | 2 | 0.01 | 1 | 0.02 | +info@netcraft.com |
| 43 | 2 | 0.01 | 1 | 0.02 | +http://www.findxbot.com |
| 44 | 1 | 0.00 | 1 | 0.02 | info@muso.com; +http://www.muso.com |
| 45 | 1 | 0.00 | 1 | 0.02 | +http://glutenfreepleasure.com/ |
| 46 | 1 | 0.00 | 0 | 0.00 | Android |
| 47 | 1 | 0.00 | 1 | 0.02 | Linux [unknown version] |
| 48 | 1 | 0.00 | 1 | 0.02 | http://nmap.org/book/nse.html |
| 49 | 1 | 0.00 | 1 | 0.02 | X11 |
| 50 | 1 | 0.00 | 0 | 0.00 | +http://www.xovibot.net/ |
| 51 | 1 | 0.00 | 1 | 0.02 | PPC Mac OS X Mach-O |
