| Used Operating Systems |
| 1 | 15022 | 42.35 | 134 | 1.33 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 5373 | 15.15 | 4229 | 41.82 | +http://www.baidu.com/search/spider.html |
| 3 | 5187 | 14.62 | 3611 | 35.71 | +http://ahrefs.com/robot/ |
| 4 | 3309 | 9.33 | 1 | 0.01 | +http://megaindex.com/crawler |
| 5 | 3091 | 8.71 | 910 | 9.00 | Windows NT |
| 6 | 1048 | 2.95 | 358 | 3.54 | +http://www.bing.com/bingbot.htm |
| 7 | 804 | 2.27 | 393 | 3.89 | +http://www.google.com/bot.html |
| 8 | 366 | 1.03 | 2 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 9 | 256 | 0.72 | 2 | 0.02 | Linux [unknown version] |
| 10 | 193 | 0.54 | 62 | 0.61 | +http://yandex.com/bots |
| 11 | 177 | 0.50 | 64 | 0.63 | http://www.opensiteexplorer.org/dotbot, ... |
| 12 | 124 | 0.35 | 118 | 1.17 | +http://www.xovibot.net/ |
| 13 | 105 | 0.30 | 36 | 0.36 | +http://www.semrush.com/bot.html |
| 14 | 63 | 0.18 | 44 | 0.44 | Windows 95 |
| 15 | 61 | 0.17 | 16 | 0.16 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 57 | 0.16 | 19 | 0.19 | Windows 98 |
| 17 | 31 | 0.09 | 11 | 0.11 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 18 | 30 | 0.08 | 11 | 0.11 | +http://www.linkdex.com/bots/ |
| 19 | 21 | 0.06 | 5 | 0.05 | Windows 3.1 |
| 20 | 19 | 0.05 | 19 | 0.19 | actually this is http://ismyblogworking.... |
| 21 | 16 | 0.05 | 9 | 0.09 | MSIE 5.5; Windows NT 5.0 |
| 22 | 16 | 0.05 | 1 | 0.01 | +https://www.lipperhey.com/en/about/ |
| 23 | 12 | 0.03 | 10 | 0.10 | ) - BrowseX (2.0.0 Windows |
| 24 | 10 | 0.03 | 9 | 0.09 | MSIE 5.5; Windows NT 4.0 |
| 25 | 10 | 0.03 | 5 | 0.05 | +http://www.meanpath.com/meanpathbot.htm... |
| 26 | 9 | 0.03 | 3 | 0.03 | +http://prlog.ru/ |
| 27 | 8 | 0.02 | 2 | 0.02 | Windows XP |
| 28 | 6 | 0.02 | 3 | 0.03 | Windows CE |
| 29 | 6 | 0.02 | 3 | 0.03 | +http://sur.ly/bot.html |
| 30 | 5 | 0.01 | 5 | 0.05 | Auto; Windows |
| 31 | 5 | 0.01 | 5 | 0.05 | Windows ME |
| 32 | 5 | 0.01 | 4 | 0.04 | +info@netcraft.com |
| 33 | 4 | 0.01 | 3 | 0.03 | Windows 2000 |
| 34 | 4 | 0.01 | 0 | 0.00 | +http://fulltext.sblog.cz/ |
| 35 | 3 | 0.01 | 1 | 0.01 | http://www.botje.com/plukkie.htm |
| 36 | 3 | 0.01 | 0 | 0.00 | X11 |
| 37 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 38 | 2 | 0.01 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 39 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
| 40 | 1 | 0.00 | 1 | 0.01 | +http://www.privacyaware.org |
| 41 | 1 | 0.00 | 1 | 0.01 | +https://www.wslta.com/WoTBoT.html |
| 42 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
| 43 | 1 | 0.00 | 0 | 0.00 | Android 2.3.5 |
