| Used Operating Systems |
| 1 | 27233 | 56.10 | 331 | 6.12 | +http://www.semrush.com/bot.html |
| 2 | 9992 | 20.58 | 129 | 2.38 | http://mj12bot.com/ |
| 3 | 5137 | 10.58 | 1855 | 34.29 | Windows NT |
| 4 | 1400 | 2.88 | 776 | 14.35 | +http://www.google.com/bot.html |
| 5 | 730 | 1.50 | 170 | 3.14 | +http://www.linkdex.com/bots/ |
| 6 | 678 | 1.40 | 101 | 1.87 | http://www.opensiteexplorer.org/dotbot, ... |
| 7 | 641 | 1.32 | 340 | 6.29 | +http://www.bing.com/bingbot.htm |
| 8 | 563 | 1.16 | 101 | 1.87 | +http://yandex.com/bots |
| 9 | 198 | 0.41 | 142 | 2.63 | +http://ahrefs.com/robot/ |
| 10 | 180 | 0.37 | 180 | 3.33 | Windows 2007 |
| 11 | 158 | 0.33 | 155 | 2.87 | Windows 2006 |
| 12 | 155 | 0.32 | 152 | 2.81 | Windows 2003 |
| 13 | 145 | 0.30 | 144 | 2.66 | Windows 2002 |
| 14 | 143 | 0.29 | 140 | 2.59 | Windows 2008 |
| 15 | 132 | 0.27 | 130 | 2.40 | Windows 2005 |
| 16 | 128 | 0.26 | 2 | 0.04 | +http://OpenLinkProfiler.org/bot |
| 17 | 115 | 0.24 | 114 | 2.11 | Windows 2004 |
| 18 | 110 | 0.23 | 110 | 2.03 | Windows 9 |
| 19 | 79 | 0.16 | 42 | 0.78 | http://help.yahoo.com/help/us/ysearch/sl... |
| 20 | 68 | 0.14 | 29 | 0.54 | Windows XP |
| 21 | 66 | 0.14 | 48 | 0.89 | Windows 95 |
| 22 | 64 | 0.13 | 1 | 0.02 | http://crawler.007ac9.net/ |
| 23 | 63 | 0.13 | 63 | 1.16 | +http://www.baidu.com/search/spider.html |
| 24 | 54 | 0.11 | 29 | 0.54 | +https://deusu.de/robot.html |
| 25 | 47 | 0.10 | 1 | 0.02 | Linux i686 [unknown version] |
| 26 | 45 | 0.09 | 5 | 0.09 | +http://www.seokicks.de/robot.html |
| 27 | 30 | 0.06 | 19 | 0.35 | Windows 98 |
| 28 | 22 | 0.05 | 2 | 0.04 | X11 |
| 29 | 18 | 0.04 | 14 | 0.26 | Windows CE |
| 30 | 16 | 0.03 | 3 | 0.06 | Android |
| 31 | 16 | 0.03 | 11 | 0.20 | MSIE 5.5; Windows NT 4.0 |
| 32 | 13 | 0.03 | 11 | 0.20 | MSIE 5.5; Windows NT 5.0 |
| 33 | 12 | 0.02 | 8 | 0.15 | Windows ME |
| 34 | 11 | 0.02 | 6 | 0.11 | +http://www.exabot.com/go/robot |
| 35 | 10 | 0.02 | 2 | 0.04 | http://www.searchmetrics.com/en/searchme... |
| 36 | 9 | 0.02 | 0 | 0.00 | Android 2.3.5 |
| 37 | 8 | 0.02 | 3 | 0.06 | +https://www.mojeek.com/bot.html |
| 38 | 6 | 0.01 | 3 | 0.06 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 39 | 6 | 0.01 | 6 | 0.11 | Auto; Windows |
| 40 | 6 | 0.01 | 3 | 0.06 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 41 | 5 | 0.01 | 4 | 0.07 | Windows 2000 |
| 42 | 5 | 0.01 | 5 | 0.09 | +http://www.uptime.com/uptimebot |
| 43 | 5 | 0.01 | 5 | 0.09 | +http://alphaseobot.com/bot.html |
| 44 | 4 | 0.01 | 4 | 0.07 | ) - BrowseX (2.0.0 Windows |
| 45 | 4 | 0.01 | 2 | 0.04 | http://www.majestic12.co.uk/bot.php?+ |
| 46 | 3 | 0.01 | 1 | 0.02 | +info@netcraft.com |
| 47 | 2 | 0.00 | 2 | 0.04 | Intel Mac OS X 10.4 |
| 48 | 2 | 0.00 | 2 | 0.04 | Windows 3.1 |
| 49 | 2 | 0.00 | 1 | 0.02 | +http://duckduckgo.com |
| 50 | 1 | 0.00 | 1 | 0.02 | +http://pmoz.info/doc/botinfo.htm |
| 51 | 1 | 0.00 | 0 | 0.00 | +http://siteexplorer.info/Backlink-Check... |
| 52 | 1 | 0.00 | 1 | 0.02 | Linux 2.2.x |
