| Used Operating Systems |
| 1 | 28216 | 67.68 | 266 | 5.88 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 4982 | 11.95 | 1950 | 43.10 | Windows NT |
| 3 | 2393 | 5.74 | 338 | 7.47 | +http://yandex.com/bots |
| 4 | 1554 | 3.73 | 379 | 8.38 | +http://ahrefs.com/robot/ |
| 5 | 1367 | 3.28 | 4 | 0.09 | +http://OpenLinkProfiler.org/bot |
| 6 | 1303 | 3.13 | 344 | 7.60 | +http://www.google.com/bot.html |
| 7 | 689 | 1.65 | 650 | 14.37 | +http://www.baidu.com/search/spider.html |
| 8 | 358 | 0.86 | 148 | 3.27 | +http://www.bing.com/bingbot.htm |
| 9 | 140 | 0.34 | 112 | 2.48 | Windows 95 |
| 10 | 128 | 0.31 | 51 | 1.13 | http://www.opensiteexplorer.org/dotbot, ... |
| 11 | 119 | 0.29 | 40 | 0.88 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 117 | 0.28 | 38 | 0.84 | +http://www.linkdex.com/bots/ |
| 13 | 79 | 0.19 | 20 | 0.44 | Windows 98 |
| 14 | 30 | 0.07 | 27 | 0.60 | Windows ME |
| 15 | 29 | 0.07 | 26 | 0.57 | Windows 2000 |
| 16 | 21 | 0.05 | 20 | 0.44 | MSIE 5.5; Windows NT 5.0 |
| 17 | 18 | 0.04 | 16 | 0.35 | Windows 3.1 |
| 18 | 18 | 0.04 | 18 | 0.40 | ) - BrowseX (2.0.0 Windows |
| 19 | 17 | 0.04 | 17 | 0.38 | Auto; Windows |
| 20 | 17 | 0.04 | 3 | 0.07 | Windows XP |
| 21 | 17 | 0.04 | 2 | 0.04 | X11 |
| 22 | 16 | 0.04 | 15 | 0.33 | MSIE 5.5; Windows NT 4.0 |
| 23 | 15 | 0.04 | 15 | 0.33 | Windows CE |
| 24 | 12 | 0.03 | 6 | 0.13 | +http://help.coccoc.com/ |
| 25 | 8 | 0.02 | 4 | 0.09 | +http://www.meanpath.com/meanpathbot.htm... |
| 26 | 6 | 0.01 | 5 | 0.11 | PPC Mac OS X Mach-O |
| 27 | 5 | 0.01 | 1 | 0.02 | http://filterdb.iss.net/crawler/ |
| 28 | 4 | 0.01 | 1 | 0.02 | +http://www.similartech.com/smtbot |
| 29 | 2 | 0.00 | 2 | 0.04 | Linux [unknown version] |
| 30 | 2 | 0.00 | 2 | 0.04 | Linux i686 [unknown version] |
| 31 | 2 | 0.00 | 1 | 0.02 | +http://www.semrush.com/bot.html |
| 32 | 2 | 0.00 | 0 | 0.00 | +http://www.xovibot.net/ |
| 33 | 2 | 0.00 | 1 | 0.02 | +info@netcraft.com |
| 34 | 1 | 0.00 | 1 | 0.02 | http://nmap.org/book/nse.html |
| 35 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 36 | 1 | 0.00 | 1 | 0.02 | Linux i586 [unknown version] |
