| Used Operating Systems |
| 1 | 16733 | 34.42 | 154 | 2.04 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 10856 | 22.33 | 13 | 0.17 | +http://ahrefs.com/robot/ |
| 3 | 7472 | 15.37 | 2483 | 32.83 | Windows NT |
| 4 | 3198 | 6.58 | 1 | 0.01 | +http://megaindex.com/crawler |
| 5 | 2802 | 5.76 | 1068 | 14.12 | +http://www.xovibot.net/ |
| 6 | 1997 | 4.11 | 1859 | 24.58 | +http://www.baidu.com/search/spider.html |
| 7 | 1161 | 2.39 | 606 | 8.01 | +http://www.google.com/bot.html |
| 8 | 1133 | 2.33 | 278 | 3.68 | +http://www.bing.com/bingbot.htm |
| 9 | 608 | 1.25 | 1 | 0.01 | +http://OpenLinkProfiler.org/bot |
| 10 | 501 | 1.03 | 259 | 3.42 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 250 | 0.51 | 64 | 0.85 | +http://www.linkdex.com/bots/ |
| 12 | 245 | 0.50 | 128 | 1.69 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 216 | 0.44 | 164 | 2.17 | Windows 95 |
| 14 | 208 | 0.43 | 10 | 0.13 | +http://fulltext.sblog.cz/ |
| 15 | 168 | 0.35 | 32 | 0.42 | +http://www.profound.net/domainappender |
| 16 | 164 | 0.34 | 43 | 0.57 | Windows 98 |
| 17 | 144 | 0.30 | 24 | 0.32 | +http://yandex.com/bots |
| 18 | 102 | 0.21 | 43 | 0.57 | http://www.opensiteexplorer.org/dotbot, ... |
| 19 | 99 | 0.20 | 21 | 0.28 | Windows XP |
| 20 | 81 | 0.17 | 6 | 0.08 | Linux i686 [unknown version] |
| 21 | 52 | 0.11 | 41 | 0.54 | Windows 3.1 |
| 22 | 51 | 0.10 | 1 | 0.01 | +https://www.aihitdata.com/about |
| 23 | 48 | 0.10 | 40 | 0.53 | Windows ME |
| 24 | 41 | 0.08 | 35 | 0.46 | MSIE 5.5; Windows NT 5.0 |
| 25 | 39 | 0.08 | 37 | 0.49 | Windows 2000 |
| 26 | 38 | 0.08 | 31 | 0.41 | MSIE 5.5; Windows NT 4.0 |
| 27 | 36 | 0.07 | 33 | 0.44 | Auto; Windows |
| 28 | 32 | 0.07 | 29 | 0.38 | ) - BrowseX (2.0.0 Windows |
| 29 | 30 | 0.06 | 15 | 0.20 | +http://duckduckgo.com |
| 30 | 24 | 0.05 | 2 | 0.03 | X11 |
| 31 | 21 | 0.04 | 18 | 0.24 | Windows CE |
| 32 | 18 | 0.04 | 9 | 0.12 | +http://www.semrush.com/bot.html |
| 33 | 9 | 0.02 | 1 | 0.01 | WinHttp.WinHttpRequest.5 |
| 34 | 8 | 0.02 | 1 | 0.01 | Android 2.3.5 |
| 35 | 6 | 0.01 | 1 | 0.01 | Linux [unknown version] |
| 36 | 6 | 0.01 | 1 | 0.01 | PPC Mac OS X 10.5 |
| 37 | 6 | 0.01 | 3 | 0.04 | +http://www.exabot.com/go/robot |
| 38 | 4 | 0.01 | 2 | 0.03 | +http://www.meanpath.com/meanpathbot.htm... |
| 39 | 3 | 0.01 | 3 | 0.04 | +http://domainsigma.com/robot |
| 40 | 2 | 0.00 | 1 | 0.01 | http://www.searchmetrics.com/en/searchme... |
| 41 | 2 | 0.00 | 1 | 0.01 | +https://www.mojeek.com/bot.html |
| 42 | 2 | 0.00 | 1 | 0.01 | +info@netcraft.com |
| 43 | 1 | 0.00 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
