| Used Operating Systems |
| 1 | 16593 | 43.32 | 164 | 2.47 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 8748 | 22.84 | 16 | 0.24 | +http://ahrefs.com/robot/ |
| 3 | 6299 | 16.45 | 4005 | 60.20 | +http://www.baidu.com/search/spider.html |
| 4 | 3389 | 8.85 | 1170 | 17.59 | Windows NT |
| 5 | 1175 | 3.07 | 255 | 3.83 | +http://www.bing.com/bingbot.htm |
| 6 | 549 | 1.43 | 278 | 4.18 | +http://www.google.com/bot.html |
| 7 | 316 | 0.83 | 172 | 2.59 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 8 | 175 | 0.46 | 55 | 0.83 | +http://www.linkdex.com/bots/ |
| 9 | 167 | 0.44 | 115 | 1.73 | +http://www.xovibot.net/ |
| 10 | 142 | 0.37 | 113 | 1.70 | Windows 95 |
| 11 | 123 | 0.32 | 26 | 0.39 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 91 | 0.24 | 29 | 0.44 | +http://www.semrush.com/bot.html |
| 13 | 81 | 0.21 | 20 | 0.30 | Windows 98 |
| 14 | 58 | 0.15 | 13 | 0.20 | +http://yandex.com/bots |
| 15 | 57 | 0.15 | 17 | 0.26 | Windows XP |
| 16 | 34 | 0.09 | 2 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 17 | 31 | 0.08 | 26 | 0.39 | Windows ME |
| 18 | 27 | 0.07 | 25 | 0.38 | Windows CE |
| 19 | 26 | 0.07 | 23 | 0.35 | Windows 2000 |
| 20 | 26 | 0.07 | 25 | 0.38 | MSIE 5.5; Windows NT 4.0 |
| 21 | 24 | 0.06 | 20 | 0.30 | Windows 3.1 |
| 22 | 21 | 0.05 | 21 | 0.32 | MSIE 5.5; Windows NT 5.0 |
| 23 | 16 | 0.04 | 14 | 0.21 | Auto; Windows |
| 24 | 16 | 0.04 | 4 | 0.06 | +http://fulltext.sblog.cz/ |
| 25 | 15 | 0.04 | 1 | 0.02 | http://www.searchmetrics.com/en/searchme... |
| 26 | 15 | 0.04 | 4 | 0.06 | +http://www.exabot.com/go/robot |
| 27 | 14 | 0.04 | 14 | 0.21 | ) - BrowseX (2.0.0 Windows |
| 28 | 14 | 0.04 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 29 | 13 | 0.03 | 1 | 0.02 | +https://www.lipperhey.com/en/about/ |
| 30 | 12 | 0.03 | 6 | 0.09 | http://www.opensiteexplorer.org/dotbot, ... |
| 31 | 6 | 0.02 | 3 | 0.05 | +http://www.meanpath.com/meanpathbot.htm... |
| 32 | 5 | 0.01 | 4 | 0.06 | Linux i686 [unknown version] |
| 33 | 5 | 0.01 | 1 | 0.02 | X11 |
| 34 | 4 | 0.01 | 2 | 0.03 | +http://duckduckgo.com |
| 35 | 3 | 0.01 | 3 | 0.05 | +http://www.domaintuno.com/robot |
| 36 | 2 | 0.01 | 1 | 0.02 | +https://www.mojeek.com/bot.html |
| 37 | 2 | 0.01 | 1 | 0.02 | Linux [unknown version] |
| 38 | 2 | 0.01 | 1 | 0.02 | +info@netcraft.com |
| 39 | 1 | 0.00 | 1 | 0.02 | Warp 4.5 |
| 40 | 1 | 0.00 | 0 | 0.00 | Series 60 |
| 41 | 1 | 0.00 | 1 | 0.02 | Macintosh PPC |
| 42 | 1 | 0.00 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 43 | 1 | 0.00 | 0 | 0.00 | Android 2.3.5 |
| 44 | 1 | 0.00 | 1 | 0.02 | SunOS sun4u |
