| Used Operating Systems |
| 1 | 8774 | 37.62 | 975 | 25.59 | Windows NT |
| 2 | 4508 | 19.33 | 77 | 2.02 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 2445 | 10.48 | 389 | 10.21 | +http://www.google.com/bot.html |
| 4 | 2020 | 8.66 | 1437 | 37.72 | +http://www.baidu.com/search/spider.html |
| 5 | 1774 | 7.61 | 40 | 1.05 | +http://yandex.com/bots |
| 6 | 1771 | 7.59 | 267 | 7.01 | +http://www.bing.com/bingbot.htm |
| 7 | 835 | 3.58 | 326 | 8.56 | +http://ahrefs.com/robot/ |
| 8 | 199 | 0.85 | 18 | 0.47 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 199 | 0.85 | 32 | 0.84 | +http://www.semrush.com/bot.html |
| 10 | 140 | 0.60 | 36 | 0.94 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 110 | 0.47 | 11 | 0.29 | +http://fulltext.sblog.cz/ |
| 12 | 98 | 0.42 | 2 | 0.05 | +http://webmeup-crawler.com/ |
| 13 | 73 | 0.31 | 24 | 0.63 | http://www.opensiteexplorer.org/dotbot, ... |
| 14 | 57 | 0.24 | 46 | 1.21 | +http://www.linkdex.com/bots/ |
| 15 | 38 | 0.16 | 26 | 0.68 | Windows 95 |
| 16 | 32 | 0.14 | 9 | 0.24 | Windows 98 |
| 17 | 23 | 0.10 | 6 | 0.16 | Windows XP |
| 18 | 20 | 0.09 | 2 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 19 | 20 | 0.09 | 3 | 0.08 | +http://ruki.rezko.net |
| 20 | 16 | 0.07 | 7 | 0.18 | +http://help.coccoc.com/ |
| 21 | 16 | 0.07 | 8 | 0.21 | +http://duckduckgo.com |
| 22 | 14 | 0.06 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 23 | 13 | 0.06 | 5 | 0.13 | http://www.bing.com/bingbot.htm |
| 24 | 12 | 0.05 | 1 | 0.03 | +https://www.lipperhey.com/en/about/ |
| 25 | 10 | 0.04 | 1 | 0.03 | +http://megaindex.com/crawler |
| 26 | 9 | 0.04 | 1 | 0.03 | crawler@mixrank.com |
| 27 | 9 | 0.04 | 4 | 0.10 | ) - BrowseX (2.0.0 Windows |
| 28 | 9 | 0.04 | 3 | 0.08 | +http://www.exabot.com/go/robot |
| 29 | 8 | 0.03 | 4 | 0.10 | +http://www.meanpath.com/meanpathbot.htm... |
| 30 | 7 | 0.03 | 5 | 0.13 | Windows CE |
| 31 | 7 | 0.03 | 6 | 0.16 | Auto; Windows |
| 32 | 7 | 0.03 | 5 | 0.13 | MSIE 5.5; Windows NT 4.0 |
| 33 | 6 | 0.03 | 4 | 0.10 | Windows 2000 |
| 34 | 6 | 0.03 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 35 | 5 | 0.02 | 5 | 0.13 | +http://glutenfreepleasure.com/ |
| 36 | 5 | 0.02 | 4 | 0.10 | Windows 3.1 |
| 37 | 4 | 0.02 | 2 | 0.05 | Linux [unknown version] |
| 38 | 4 | 0.02 | 3 | 0.08 | +info@netcraft.com |
| 39 | 3 | 0.01 | 2 | 0.05 | http://nmap.org/book/nse.html |
| 40 | 3 | 0.01 | 1 | 0.03 | Windows ME |
| 41 | 3 | 0.01 | 1 | 0.03 | +http://prlog.ru/ |
| 42 | 2 | 0.01 | 2 | 0.05 | MSIE 5.5; Windows NT 5.0 |
| 43 | 2 | 0.01 | 2 | 0.05 | actually this is http://ismyblogworking.... |
| 44 | 2 | 0.01 | 2 | 0.05 | X11 |
| 45 | 1 | 0.00 | 1 | 0.03 | Windows Live Messenger 14.0.8117.0416 |
| 46 | 1 | 0.00 | 1 | 0.03 | MSIE 9.0; WIndows NT 9.0; en-US |
| 47 | 1 | 0.00 | 1 | 0.03 | +http://www.privacyaware.org |
| 48 | 1 | 0.00 | 1 | 0.03 | +http://www.grapeshot.co.uk/crawler.php |
| 49 | 1 | 0.00 | 1 | 0.03 | +http://www.uptime.com/uptimebot |
| 50 | 1 | 0.00 | 1 | 0.03 | Android 2.3.5 |
