| Used Operating Systems |
| 1 | 12166 | 55.97 | 4798 | 63.99 | Windows NT |
| 2 | 1509 | 6.94 | 71 | 0.95 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 1040 | 4.78 | 599 | 7.99 | +http://www.baidu.com/search/spider.html |
| 4 | 970 | 4.46 | 397 | 5.29 | +http://ahrefs.com/robot/ |
| 5 | 902 | 4.15 | 273 | 3.64 | http://www.opensiteexplorer.org/dotbot, ... |
| 6 | 873 | 4.02 | 121 | 1.61 | +http://yandex.com/bots |
| 7 | 842 | 3.87 | 466 | 6.21 | +http://www.google.com/bot.html |
| 8 | 823 | 3.79 | 1 | 0.01 | +http://webmeup-crawler.com/ |
| 9 | 727 | 3.34 | 4 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 10 | 559 | 2.57 | 304 | 4.05 | +http://www.bing.com/bingbot.htm |
| 11 | 317 | 1.46 | 144 | 1.92 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 254 | 1.17 | 1 | 0.01 | +http://www.linkpad.ru |
| 13 | 209 | 0.96 | 75 | 1.00 | +http://www.linkdex.com/bots/ |
| 14 | 122 | 0.56 | 59 | 0.79 | Windows 95 |
| 15 | 56 | 0.26 | 19 | 0.25 | Windows 98 |
| 16 | 48 | 0.22 | 18 | 0.24 | http://help.yahoo.com/help/us/ysearch/sl... |
| 17 | 37 | 0.17 | 18 | 0.24 | X11 |
| 18 | 31 | 0.14 | 12 | 0.16 | MSIE 5.5; Windows NT 4.0 |
| 19 | 29 | 0.13 | 12 | 0.16 | Windows 2000 |
| 20 | 27 | 0.12 | 9 | 0.12 | Windows XP |
| 21 | 22 | 0.10 | 14 | 0.19 | Windows CE |
| 22 | 18 | 0.08 | 11 | 0.15 | Windows ME |
| 23 | 14 | 0.06 | 2 | 0.03 | http://www.searchmetrics.com/en/searchme... |
| 24 | 14 | 0.06 | 8 | 0.11 | Windows 3.1 |
| 25 | 13 | 0.06 | 8 | 0.11 | MSIE 5.5; Windows NT 5.0 |
| 26 | 12 | 0.06 | 3 | 0.04 | +http://www.warebay.com/bot.html |
| 27 | 11 | 0.05 | 4 | 0.05 | Auto; Windows |
| 28 | 10 | 0.05 | 4 | 0.05 | ) - BrowseX (2.0.0 Windows |
| 29 | 8 | 0.04 | 8 | 0.11 | +http://www.easou.com/search/spider.html |
| 30 | 7 | 0.03 | 3 | 0.04 | Android 2.3.5 |
| 31 | 7 | 0.03 | 4 | 0.05 | +http://www.exabot.com/go/robot |
| 32 | 6 | 0.03 | 2 | 0.03 | +http://getdownload.ws |
| 33 | 6 | 0.03 | 3 | 0.04 | http://crawler.sistrix.net/ |
| 34 | 6 | 0.03 | 1 | 0.01 | FreeBSD [unknown version] |
| 35 | 5 | 0.02 | 5 | 0.07 | Linux i686 [unknown version] |
| 36 | 5 | 0.02 | 4 | 0.05 | +http://wmaid.com/explore/ |
| 37 | 5 | 0.02 | 1 | 0.01 | +http://tryload.in |
| 38 | 4 | 0.02 | 1 | 0.01 | +http://uni5download.com |
| 39 | 3 | 0.01 | 3 | 0.04 | Windows Phone 8.0; Trident/6.0; IEMobile... |
| 40 | 3 | 0.01 | 1 | 0.01 | http://crawler.007ac9.net/ |
| 41 | 3 | 0.01 | 1 | 0.01 | +http://overx50.com/ |
| 42 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 43 | 2 | 0.01 | 0 | 0.00 | Trident/6.0; Windows NT 6.1; SV1; Dealio... |
| 44 | 2 | 0.01 | 1 | 0.01 | +http://www.seokicks.de/robot.html |
| 45 | 2 | 0.01 | 1 | 0.01 | +info@netcraft.com |
| 46 | 2 | 0.01 | 1 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 47 | 1 | 0.00 | 1 | 0.01 | OSF1 V4.0 alpha |
| 48 | 1 | 0.00 | 0 | 0.00 | Win32 |
| 49 | 1 | 0.00 | 1 | 0.01 | +http://fb02itsscan.fh-muenster.de |
| 50 | 1 | 0.00 | 1 | 0.01 | Trident/6.0; Windows 98; SpamBlockerUtil... |
