| Used Operating Systems |
| 1 | 20464 | 37.40 | 140 | 1.12 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 10734 | 19.62 | 2007 | 16.04 | Windows NT |
| 3 | 6595 | 12.05 | 4952 | 39.58 | +http://www.baidu.com/search/spider.html |
| 4 | 4920 | 8.99 | 3236 | 25.86 | +http://ahrefs.com/robot/ |
| 5 | 3383 | 6.18 | 1 | 0.01 | +http://megaindex.com/crawler |
| 6 | 2009 | 3.67 | 388 | 3.10 | +http://yandex.com/bots |
| 7 | 2002 | 3.66 | 2 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 8 | 1526 | 2.79 | 672 | 5.37 | +http://www.google.com/bot.html |
| 9 | 993 | 1.81 | 308 | 2.46 | +http://www.bing.com/bingbot.htm |
| 10 | 473 | 0.86 | 153 | 1.22 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 313 | 0.57 | 92 | 0.74 | +http://www.exabot.com/go/robot |
| 12 | 250 | 0.46 | 1 | 0.01 | Linux [unknown version] |
| 13 | 185 | 0.34 | 170 | 1.36 | +http://www.xovibot.net/ |
| 14 | 165 | 0.30 | 25 | 0.20 | +http://www.linkdex.com/bots/ |
| 15 | 117 | 0.21 | 47 | 0.38 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 102 | 0.19 | 77 | 0.62 | Windows 95 |
| 17 | 80 | 0.15 | 24 | 0.19 | Windows 98 |
| 18 | 45 | 0.08 | 16 | 0.13 | +http://sur.ly/bot.html |
| 19 | 35 | 0.06 | 11 | 0.09 | Windows XP |
| 20 | 31 | 0.06 | 23 | 0.18 | Windows ME |
| 21 | 27 | 0.05 | 19 | 0.15 | MSIE 5.5; Windows NT 5.0 |
| 22 | 23 | 0.04 | 15 | 0.12 | Windows 3.1 |
| 23 | 22 | 0.04 | 3 | 0.02 | http://www.opensiteexplorer.org/dotbot, ... |
| 24 | 22 | 0.04 | 18 | 0.14 | ) - BrowseX (2.0.0 Windows |
| 25 | 22 | 0.04 | 21 | 0.17 | MSIE 5.5; Windows NT 4.0 |
| 26 | 21 | 0.04 | 18 | 0.14 | Windows 2000 |
| 27 | 18 | 0.03 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 28 | 17 | 0.03 | 3 | 0.02 | X11 |
| 29 | 16 | 0.03 | 4 | 0.03 | http://www.botje.com/plukkie.htm |
| 30 | 14 | 0.03 | 13 | 0.10 | Windows CE |
| 31 | 14 | 0.03 | 14 | 0.11 | apps-spreadsheets; +http://docs.google.c... |
| 32 | 14 | 0.03 | 1 | 0.01 | +https://www.lipperhey.com/en/about/ |
| 33 | 12 | 0.02 | 12 | 0.10 | Auto; Windows |
| 34 | 11 | 0.02 | 10 | 0.08 | +info@netcraft.com |
| 35 | 8 | 0.01 | 4 | 0.03 | +http://www.meanpath.com/meanpathbot.htm... |
| 36 | 8 | 0.01 | 4 | 0.03 | +http://duckduckgo.com |
| 37 | 7 | 0.01 | 1 | 0.01 | http://filterdb.iss.net/crawler/ |
| 38 | 3 | 0.01 | 2 | 0.02 | http://nmap.org/book/nse.html |
| 39 | 3 | 0.01 | 1 | 0.01 | Android 2.3.5 |
| 40 | 3 | 0.01 | 0 | 0.00 | +http://webmeup-crawler.com/ |
| 41 | 3 | 0.01 | 2 | 0.02 | NetBSD [unknown version] |
| 42 | 1 | 0.00 | 1 | 0.01 | +http://www.privacyaware.org |
| 43 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
