| Used Operating Systems |
| 1 | 17500 | 65.73 | 146 | 4.00 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 2343 | 8.80 | 1814 | 49.66 | +http://www.baidu.com/search/spider.html |
| 3 | 2016 | 7.57 | 731 | 20.01 | Windows NT |
| 4 | 1356 | 5.09 | 233 | 6.38 | http://www.opensiteexplorer.org/dotbot, ... |
| 5 | 1100 | 4.13 | 27 | 0.74 | +http://yandex.com/bots |
| 6 | 746 | 2.80 | 234 | 6.41 | +http://www.google.com/bot.html |
| 7 | 516 | 1.94 | 4 | 0.11 | +http://www.warebay.com/bot.html |
| 8 | 361 | 1.36 | 123 | 3.37 | +http://www.bing.com/bingbot.htm |
| 9 | 125 | 0.47 | 94 | 2.57 | +http://www.linkdex.com/bots/ |
| 10 | 111 | 0.42 | 81 | 2.22 | +http://www.xovibot.net/ |
| 11 | 97 | 0.36 | 5 | 0.14 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 72 | 0.27 | 8 | 0.22 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 62 | 0.23 | 22 | 0.60 | Windows XP |
| 14 | 48 | 0.18 | 42 | 1.15 | Windows 95 |
| 15 | 17 | 0.06 | 6 | 0.16 | +http://ahrefs.com/robot/ |
| 16 | 16 | 0.06 | 10 | 0.27 | Windows 98 |
| 17 | 12 | 0.05 | 4 | 0.11 | +http://help.coccoc.com/ |
| 18 | 12 | 0.05 | 6 | 0.16 | Windows 3.1 |
| 19 | 11 | 0.04 | 6 | 0.16 | Auto; Windows |
| 20 | 11 | 0.04 | 7 | 0.19 | Windows ME |
| 21 | 9 | 0.03 | 7 | 0.19 | MSIE 5.5; Windows NT 5.0 |
| 22 | 8 | 0.03 | 5 | 0.14 | Windows CE |
| 23 | 8 | 0.03 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 24 | 6 | 0.02 | 4 | 0.11 | ) - BrowseX (2.0.0 Windows |
| 25 | 6 | 0.02 | 0 | 0.00 | +http://fulltext.sblog.cz/ |
| 26 | 5 | 0.02 | 5 | 0.14 | Windows 2000 |
| 27 | 5 | 0.02 | 5 | 0.14 | MSIE 5.5; Windows NT 4.0 |
| 28 | 4 | 0.02 | 2 | 0.05 | http://www.searchmetrics.com/en/searchme... |
| 29 | 4 | 0.02 | 2 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 30 | 4 | 0.02 | 3 | 0.08 | Linux i686 [unknown version] |
| 31 | 4 | 0.02 | 1 | 0.03 | +http://www.semrush.com/bot.html |
| 32 | 4 | 0.02 | 2 | 0.05 | +http://www.meanpath.com/meanpathbot.htm... |
| 33 | 4 | 0.02 | 2 | 0.05 | +http://duckduckgo.com |
| 34 | 3 | 0.01 | 1 | 0.03 | +https://www.lipperhey.com/en/about/ |
| 35 | 3 | 0.01 | 3 | 0.08 | +http://domainsigma.com/robot |
| 36 | 2 | 0.01 | 0 | 0.00 | Android |
| 37 | 2 | 0.01 | 2 | 0.05 | Linux [unknown version] |
| 38 | 2 | 0.01 | 1 | 0.03 | +http://crawler.seolytics.net/ |
| 39 | 2 | 0.01 | 1 | 0.03 | +info@netcraft.com |
| 40 | 2 | 0.01 | 1 | 0.03 | +http://www.seokicks.de/robot.html |
| 41 | 2 | 0.01 | 1 | 0.03 | +http://www.exabot.com/go/robot |
| 42 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 43 | 1 | 0.00 | 1 | 0.03 | http://nmap.org/book/nse.html |
| 44 | 1 | 0.00 | 1 | 0.03 | +http://megaindex.com/crawler |
