| Used Operating Systems |
| 1 | 2250 | 38.25 | 2026 | 49.33 | +http://www.baidu.com/search/spider.html |
| 2 | 1777 | 30.21 | 1496 | 36.43 | Windows NT |
| 3 | 855 | 14.53 | 243 | 5.92 | +http://www.bing.com/bingbot.htm |
| 4 | 158 | 2.69 | 52 | 1.27 | +http://yandex.com/bots |
| 5 | 151 | 2.57 | 57 | 1.39 | +http://www.google.com/bot.html |
| 6 | 137 | 2.33 | 66 | 1.61 | http://www.majestic12.co.uk/bot.php?+ |
| 7 | 123 | 2.09 | 41 | 1.00 | +http://www.profound.net/urlappendbot.ht... |
| 8 | 117 | 1.99 | 0 | 0.00 | http://www.opensiteexplorer.org/dotbot, ... |
| 9 | 70 | 1.19 | 29 | 0.71 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 10 | 28 | 0.48 | 11 | 0.27 | +http://www.easou.com/search/spider.html |
| 11 | 28 | 0.48 | 12 | 0.29 | +http://www.exabot.com/go/robot |
| 12 | 18 | 0.31 | 8 | 0.19 | http://help.yahoo.com/help/us/ysearch/sl... |
| 13 | 15 | 0.25 | 3 | 0.07 | WinHttp.WinHttpRequest.5 |
| 14 | 12 | 0.20 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 15 | 11 | 0.19 | 0 | 0.00 | +http://ahrefs.com/robot/ |
| 16 | 10 | 0.17 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 17 | 10 | 0.17 | 2 | 0.05 | Linux [unknown version] |
| 18 | 9 | 0.15 | 3 | 0.07 | Windows CE |
| 19 | 9 | 0.15 | 5 | 0.12 | Windows 98 |
| 20 | 8 | 0.14 | 4 | 0.10 | http://crawler.sistrix.net/ |
| 21 | 8 | 0.14 | 4 | 0.10 | +http://endb-consolidated.aihit.com/ |
| 22 | 6 | 0.10 | 2 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 23 | 6 | 0.10 | 2 | 0.05 | Windows 95 |
| 24 | 6 | 0.10 | 4 | 0.10 | +http://freedlf.com/ |
| 25 | 5 | 0.08 | 3 | 0.07 | Linux i686 [unknown version] |
| 26 | 5 | 0.08 | 3 | 0.07 | +http://u12files.com/ |
| 27 | 4 | 0.07 | 4 | 0.10 | Linux 2.4.x |
| 28 | 4 | 0.07 | 2 | 0.05 | +http://www.linkpad.ru |
| 29 | 4 | 0.07 | 2 | 0.05 | +http://www.seokicks.de/robot.html |
| 30 | 4 | 0.07 | 2 | 0.05 | +info@netcraft.com |
| 31 | 4 | 0.07 | 2 | 0.05 | ScoutJet; +http://blekko.com/about/blekk... |
| 32 | 4 | 0.07 | 2 | 0.05 | +http://siteexplorer.info/ |
| 33 | 4 | 0.07 | 2 | 0.05 | +http://fulltext.sblog.cz/ |
| 34 | 3 | 0.05 | 3 | 0.07 | PPC Mac OS X Mach-O |
| 35 | 3 | 0.05 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 36 | 2 | 0.03 | 2 | 0.05 | http://www.lipperhey.com/ |
| 37 | 2 | 0.03 | 2 | 0.05 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 38 | 2 | 0.03 | 2 | 0.05 | +http://136.186.231.16 |
| 39 | 2 | 0.03 | 0 | 0.00 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 40 | 2 | 0.03 | 1 | 0.02 | Windows Phone OS 7.5 |
| 41 | 2 | 0.03 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 42 | 2 | 0.03 | 2 | 0.05 | +http://wmaid.com/explore/ |
| 43 | 1 | 0.02 | 1 | 0.02 | Windows 92 |
| 44 | 1 | 0.02 | 0 | 0.00 | +http://www.meanpath.com/meanpathbot.htm... |
| 45 | 1 | 0.02 | 1 | 0.02 | MSIE 5.5; Windows NT 5.0 |
