| Used Operating Systems |
| 1 | 8387 | 35.35 | 7190 | 57.61 | +http://www.baidu.com/search/spider.html |
| 2 | 4650 | 19.60 | 1567 | 12.56 | Windows NT |
| 3 | 2723 | 11.48 | 823 | 6.59 | +http://www.bing.com/bingbot.htm |
| 4 | 1222 | 5.15 | 686 | 5.50 | +http://www.easou.com/search/spider.html |
| 5 | 982 | 4.14 | 302 | 2.42 | http://www.majestic12.co.uk/bot.php?+ |
| 6 | 912 | 3.84 | 582 | 4.66 | +http://ahrefs.com/robot/ |
| 7 | 864 | 3.64 | 478 | 3.83 | +http://www.google.com/bot.html |
| 8 | 832 | 3.51 | 2 | 0.02 | +http://webmeup-crawler.com/ |
| 9 | 689 | 2.90 | 335 | 2.68 | http://help.yahoo.com/help/us/ysearch/sl... |
| 10 | 531 | 2.24 | 2 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 11 | 432 | 1.82 | 105 | 0.84 | http://www.opensiteexplorer.org/dotbot, ... |
| 12 | 329 | 1.39 | 85 | 0.68 | +http://yandex.com/bots |
| 13 | 241 | 1.02 | 33 | 0.26 | +http://fulltext.sblog.cz/ |
| 14 | 105 | 0.44 | 32 | 0.26 | Windows 95 |
| 15 | 100 | 0.42 | 10 | 0.08 | http://www.searchmetrics.com/en/searchme... |
| 16 | 92 | 0.39 | 33 | 0.26 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 17 | 68 | 0.29 | 21 | 0.17 | Windows 98 |
| 18 | 63 | 0.27 | 31 | 0.25 | +http://www.exabot.com/go/robot |
| 19 | 58 | 0.24 | 26 | 0.21 | +http://www.career-x.de/bot.html |
| 20 | 53 | 0.22 | 2 | 0.02 | +http://siteexplorer.info/ |
| 21 | 45 | 0.19 | 3 | 0.02 | WinHttp.WinHttpRequest.5 |
| 22 | 39 | 0.16 | 23 | 0.18 | Linux i686 [unknown version] |
| 23 | 32 | 0.13 | 2 | 0.02 | +http://www.linkpad.ru |
| 24 | 22 | 0.09 | 9 | 0.07 | Windows XP |
| 25 | 21 | 0.09 | 7 | 0.06 | ) - BrowseX (2.0.0 Windows |
| 26 | 15 | 0.06 | 5 | 0.04 | Windows 2000 |
| 27 | 15 | 0.06 | 6 | 0.05 | MSIE 5.5; Windows NT 5.0 |
| 28 | 12 | 0.05 | 4 | 0.03 | Auto; Windows |
| 29 | 12 | 0.05 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 30 | 12 | 0.05 | 6 | 0.05 | +http://help.coccoc.com/ |
| 31 | 12 | 0.05 | 4 | 0.03 | Windows ME |
| 32 | 12 | 0.05 | 7 | 0.06 | +http://wmaid.com/explore/ |
| 33 | 12 | 0.05 | 4 | 0.03 | MSIE 5.5; Windows NT 4.0 |
| 34 | 11 | 0.05 | 1 | 0.01 | +http://www.profound.net/urlappendbot.ht... |
| 35 | 10 | 0.04 | 5 | 0.04 | http://crawler.sistrix.net/ |
| 36 | 9 | 0.04 | 3 | 0.02 | Windows 3.1 |
| 37 | 9 | 0.04 | 5 | 0.04 | Intel Mac OS X 10.6 |
| 38 | 8 | 0.03 | 2 | 0.02 | Linux [unknown version] |
| 39 | 7 | 0.03 | 3 | 0.02 | http://www.tkl.iis.u-tokyo.ac.jp/~crawle... |
| 40 | 6 | 0.03 | 2 | 0.02 | +http://inload.in |
| 41 | 6 | 0.03 | 3 | 0.02 | +http://botw.org |
| 42 | 6 | 0.03 | 3 | 0.02 | +http://www.meanpath.com/meanpathbot.htm... |
| 43 | 5 | 0.02 | 5 | 0.04 | +http://pmoz.info/doc/botinfo.htm |
| 44 | 4 | 0.02 | 0 | 0.00 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 45 | 4 | 0.02 | 2 | 0.02 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 46 | 3 | 0.01 | 1 | 0.01 | +http://getdownload.ws |
| 47 | 3 | 0.01 | 1 | 0.01 | http://help.zum.com/inquiry |
| 48 | 3 | 0.01 | 1 | 0.01 | +http://freedlf.com/ |
| 49 | 3 | 0.01 | 2 | 0.02 | X11 |
| 50 | 2 | 0.01 | 0 | 0.00 | Windows |
| 51 | 2 | 0.01 | 1 | 0.01 | +http://www.proximic.com/info/spider.php |
| 52 | 2 | 0.01 | 1 | 0.01 | +http://www.netseer.com/crawler.html; cr... |
| 53 | 2 | 0.01 | 0 | 0.00 | Windows 9. |
| 54 | 2 | 0.01 | 0 | 0.00 | Linux 2.4.x |
| 55 | 2 | 0.01 | 2 | 0.02 | +http://www.linkdex.com/bots/ |
| 56 | 2 | 0.01 | 0 | 0.00 | Windows Phone OS 7.5 |
| 57 | 2 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 58 | 2 | 0.01 | 1 | 0.01 | +info@netcraft.com |
| 59 | 2 | 0.01 | 2 | 0.02 | +http://www.loadtime.net/bot.html |
| 60 | 2 | 0.01 | 2 | 0.02 | Windows NT 5.1; .NET CLR 2.0.50727; .N... |
| 61 | 2 | 0.01 | 2 | 0.02 | https://help.yahoo.com/kb/mail/yahoo-lin... |
| 62 | 2 | 0.01 | 1 | 0.01 | ScoutJet; +http://blekko.com/about/blekk... |
| 63 | 1 | 0.00 | 0 | 0.00 | Macintosh PPC |
| 64 | 1 | 0.00 | 1 | 0.01 | mailto: crawling@ubermetrics-technologie... |
| 65 | 1 | 0.00 | 1 | 0.01 | +http://tweetmeme.com/ |
| 66 | 1 | 0.00 | 1 | 0.01 | +http://www.xovibot.net/ |
| 67 | 1 | 0.00 | 1 | 0.01 | Socialradarbot/2.0; en-US; bot@infegy.co... |
| 68 | 1 | 0.00 | 1 | 0.01 | Win16 |
