| Used Operating Systems |
| 1 | 21255 | 41.10 | 117 | 1.41 | +http://ahrefs.com/robot/ |
| 2 | 14677 | 28.38 | 146 | 1.76 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 6014 | 11.63 | 3401 | 41.10 | Windows NT |
| 4 | 2490 | 4.81 | 2090 | 25.26 | +http://www.baidu.com/search/spider.html |
| 5 | 1825 | 3.53 | 772 | 9.33 | +http://www.xovibot.net/ |
| 6 | 1234 | 2.39 | 378 | 4.57 | +http://yandex.com/bots |
| 7 | 1202 | 2.32 | 2 | 0.02 | +http://megaindex.com/crawler |
| 8 | 1093 | 2.11 | 403 | 4.87 | +http://www.google.com/bot.html |
| 9 | 551 | 1.07 | 228 | 2.76 | +http://www.bing.com/bingbot.htm |
| 10 | 392 | 0.76 | 217 | 2.62 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 203 | 0.39 | 203 | 2.45 | +http://monasterytea.spbdyet.ru |
| 12 | 159 | 0.31 | 84 | 1.02 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 87 | 0.17 | 2 | 0.02 | +http://webmeup-crawler.com/ |
| 14 | 78 | 0.15 | 23 | 0.28 | +http://www.linkdex.com/bots/ |
| 15 | 63 | 0.12 | 31 | 0.37 | http://www.opensiteexplorer.org/dotbot, ... |
| 16 | 54 | 0.10 | 54 | 0.65 | +http://warifort.moykrest.ru |
| 17 | 41 | 0.08 | 25 | 0.30 | Windows 95 |
| 18 | 28 | 0.05 | 2 | 0.02 | http://www.searchmetrics.com/en/searchme... |
| 19 | 24 | 0.05 | 13 | 0.16 | +http://www.exabot.com/go/robot |
| 20 | 23 | 0.04 | 1 | 0.01 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 21 | 21 | 0.04 | 9 | 0.11 | Windows XP |
| 22 | 19 | 0.04 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 23 | 17 | 0.03 | 4 | 0.05 | Windows 98 |
| 24 | 14 | 0.03 | 4 | 0.05 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 25 | 14 | 0.03 | 4 | 0.05 | X11 |
| 26 | 14 | 0.03 | 7 | 0.08 | +http://www.meanpath.com/meanpathbot.htm... |
| 27 | 13 | 0.03 | 9 | 0.11 | MSIE 5.5; Windows NT 5.0 |
| 28 | 13 | 0.03 | 1 | 0.01 | +https://www.lipperhey.com/en/about/ |
| 29 | 12 | 0.02 | 0 | 0.00 | +http://www.seograph.net/bot.html |
| 30 | 12 | 0.02 | 4 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 31 | 12 | 0.02 | 5 | 0.06 | Windows ME |
| 32 | 11 | 0.02 | 9 | 0.11 | MSIE 5.5; Windows NT 4.0 |
| 33 | 10 | 0.02 | 5 | 0.06 | Windows 3.1 |
| 34 | 9 | 0.02 | 5 | 0.06 | Android 2.3.5 |
| 35 | 6 | 0.01 | 2 | 0.02 | +http://www.profound.net/domainappender |
| 36 | 6 | 0.01 | 3 | 0.04 | +http://fulltext.sblog.cz/ |
| 37 | 5 | 0.01 | 2 | 0.02 | ) - BrowseX (2.0.0 Windows |
| 38 | 4 | 0.01 | 2 | 0.02 | +http://duckduckgo.com |
| 39 | 2 | 0.00 | 1 | 0.01 | Android 4.2.2 |
| 40 | 2 | 0.00 | 2 | 0.02 | http://nmap.org/book/nse.html |
| 41 | 2 | 0.00 | 1 | 0.01 | +info@netcraft.com |
| 42 | 2 | 0.00 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 43 | 1 | 0.00 | 1 | 0.01 | Windows 2000 |
| 44 | 1 | 0.00 | 1 | 0.01 | Windows CE |
| 45 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 46 | 1 | 0.00 | 0 | 0.00 | +http://corp.sputnik.ru/webmaster |
| 47 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
