| Used Operating Systems |
| 1 | 16501 | 69.31 | 2011 | 41.38 | Windows NT |
| 2 | 2556 | 10.74 | 86 | 1.77 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 2388 | 10.03 | 1992 | 40.99 | +http://www.baidu.com/search/spider.html |
| 4 | 945 | 3.97 | 77 | 1.58 | +http://yandex.com/bots |
| 5 | 659 | 2.77 | 400 | 8.23 | +http://www.google.com/bot.html |
| 6 | 328 | 1.38 | 93 | 1.91 | +http://www.bing.com/bingbot.htm |
| 7 | 132 | 0.55 | 105 | 2.16 | +http://www.linkdex.com/bots/ |
| 8 | 71 | 0.30 | 4 | 0.08 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 30 | 0.13 | 1 | 0.02 | +http://fulltext.sblog.cz/ |
| 10 | 15 | 0.06 | 4 | 0.08 | +http://ahrefs.com/robot/ |
| 11 | 14 | 0.06 | 7 | 0.14 | +http://www.exabot.com/go/robot |
| 12 | 13 | 0.05 | 1 | 0.02 | http://www.tkl.iis.u-tokyo.ac.jp/~crawle... |
| 13 | 13 | 0.05 | 1 | 0.02 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 14 | 12 | 0.05 | 4 | 0.08 | +http://www.profound.net/domainappender |
| 15 | 10 | 0.04 | 5 | 0.10 | http://www.searchmetrics.com/en/searchme... |
| 16 | 10 | 0.04 | 6 | 0.12 | http://crawler.sistrix.net/ |
| 17 | 8 | 0.03 | 4 | 0.08 | http://help.yahoo.com/help/us/ysearch/sl... |
| 18 | 7 | 0.03 | 2 | 0.04 | +http://isdownload.biz |
| 19 | 7 | 0.03 | 7 | 0.14 | Windows 95 |
| 20 | 6 | 0.03 | 2 | 0.04 | +http://advbot.net/bot.html |
| 21 | 6 | 0.03 | 3 | 0.06 | http://www.opensiteexplorer.org/dotbot, ... |
| 22 | 6 | 0.03 | 2 | 0.04 | +http://webmeup-crawler.com/ |
| 23 | 6 | 0.03 | 3 | 0.06 | +http://duckduckgo.com |
| 24 | 5 | 0.02 | 5 | 0.10 | Linux i686 [unknown version] |
| 25 | 4 | 0.02 | 2 | 0.04 | +http://help.coccoc.com/ |
| 26 | 4 | 0.02 | 1 | 0.02 | +http://www.semrush.com/bot.html |
| 27 | 4 | 0.02 | 2 | 0.04 | +http://gimme60.com |
| 28 | 4 | 0.02 | 2 | 0.04 | +http://www.meanpath.com/meanpathbot.htm... |
| 29 | 4 | 0.02 | 4 | 0.08 | +http://domainsigma.com/robot |
| 30 | 3 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 31 | 3 | 0.01 | 2 | 0.04 | Windows XP |
| 32 | 3 | 0.01 | 3 | 0.06 | Windows 3.1 |
| 33 | 3 | 0.01 | 0 | 0.00 | +http://www.xovibot.net/ |
| 34 | 3 | 0.01 | 1 | 0.02 | Windows 98 |
| 35 | 2 | 0.01 | 2 | 0.04 | Windows 2000 |
| 36 | 2 | 0.01 | 1 | 0.02 | +http://www.proximic.com/info/spider.php |
| 37 | 2 | 0.01 | 1 | 0.02 | Mail.RU_Bot/Robots; +http://go.mail.ru/h... |
| 38 | 2 | 0.01 | 1 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 39 | 2 | 0.01 | 2 | 0.04 | Windows ME |
| 40 | 2 | 0.01 | 1 | 0.02 | +http://www.domainoptima.com/robot |
| 41 | 2 | 0.01 | 2 | 0.04 | MSIE 5.5; Windows NT 5.0 |
| 42 | 2 | 0.01 | 1 | 0.02 | +info@netcraft.com |
| 43 | 2 | 0.01 | 1 | 0.02 | X11 |
| 44 | 2 | 0.01 | 1 | 0.02 | ScoutJet; +http://blekko.com/about/blekk... |
| 45 | 1 | 0.00 | 1 | 0.02 | Windows CE |
| 46 | 1 | 0.00 | 0 | 0.00 | Android |
| 47 | 1 | 0.00 | 1 | 0.02 | +https://www.megaindex.ru/?tab=linkAnaly... |
| 48 | 1 | 0.00 | 1 | 0.02 | +; |
| 49 | 1 | 0.00 | 1 | 0.02 | +http://www.loadtime.net/bot.html |
| 50 | 1 | 0.00 | 1 | 0.02 | Android 2.3.5 |
