| Used Operating Systems |
| 1 | 18621 | 44.53 | 309 | 3.14 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 8641 | 20.67 | 4720 | 47.97 | +http://ahrefs.com/robot/ |
| 3 | 5001 | 11.96 | 5 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 4 | 2206 | 5.28 | 2108 | 21.42 | +http://www.baidu.com/search/spider.html |
| 5 | 2184 | 5.22 | 1220 | 12.40 | Windows NT |
| 6 | 2000 | 4.78 | 114 | 1.16 | +http://yandex.com/bots |
| 7 | 1362 | 3.26 | 821 | 8.34 | +http://www.google.com/bot.html |
| 8 | 516 | 1.23 | 4 | 0.04 | +http://www.warebay.com/bot.html |
| 9 | 406 | 0.97 | 226 | 2.30 | +http://www.bing.com/bingbot.htm |
| 10 | 403 | 0.96 | 126 | 1.28 | +http://www.linkdex.com/bots/ |
| 11 | 102 | 0.24 | 53 | 0.54 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 58 | 0.14 | 24 | 0.24 | Windows 95 |
| 13 | 50 | 0.12 | 25 | 0.25 | +http://www.meanpath.com/meanpathbot.htm... |
| 14 | 48 | 0.11 | 16 | 0.16 | Windows 98 |
| 15 | 40 | 0.10 | 18 | 0.18 | +http://www.exabot.com/go/robot |
| 16 | 33 | 0.08 | 16 | 0.16 | http://www.opensiteexplorer.org/dotbot, ... |
| 17 | 25 | 0.06 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 18 | 24 | 0.06 | 1 | 0.01 | http://www.lipperhey.com/ |
| 19 | 11 | 0.03 | 3 | 0.03 | Windows 2000 |
| 20 | 11 | 0.03 | 5 | 0.05 | MSIE 5.5; Windows NT 4.0 |
| 21 | 8 | 0.02 | 2 | 0.02 | +http://uni5download.com |
| 22 | 7 | 0.02 | 3 | 0.03 | Windows XP |
| 23 | 7 | 0.02 | 1 | 0.01 | WinHttp.WinHttpRequest.5 |
| 24 | 6 | 0.01 | 2 | 0.02 | Windows ME |
| 25 | 5 | 0.01 | 1 | 0.01 | +http://a14download.com |
| 26 | 4 | 0.01 | 2 | 0.02 | http://help.yahoo.com/help/us/ysearch/sl... |
| 27 | 4 | 0.01 | 2 | 0.02 | X11 |
| 28 | 3 | 0.01 | 1 | 0.01 | Auto; Windows |
| 29 | 3 | 0.01 | 1 | 0.01 | Wayback Machine Live Record; +http://arc... |
| 30 | 3 | 0.01 | 1 | 0.01 | +http://onlythegames.com |
| 31 | 3 | 0.01 | 1 | 0.01 | MSIE 5.5; Windows NT 5.0 |
| 32 | 3 | 0.01 | 2 | 0.02 | +info@netcraft.com |
| 33 | 3 | 0.01 | 2 | 0.02 | +http://wmaid.com/explore/ |
| 34 | 3 | 0.01 | 1 | 0.01 | ) - BrowseX (2.0.0 Windows |
| 35 | 3 | 0.01 | 1 | 0.01 | +http://dl2engine.net |
| 36 | 2 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
| 37 | 1 | 0.00 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 38 | 1 | 0.00 | 0 | 0.00 | Intel Mac OS X 10.6 |
| 39 | 1 | 0.00 | 1 | 0.01 | Android 2.3.5 |
| 40 | 1 | 0.00 | 1 | 0.01 | FreeBSD [unknown version] |
