| Used Operating Systems |
| 1 | 55403 | 42.35 | 314 | 3.09 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 35007 | 26.76 | 1520 | 14.98 | +http://ahrefs.com/robot/ |
| 3 | 10469 | 8.00 | 2225 | 21.92 | Windows NT |
| 4 | 7762 | 5.93 | 2 | 0.02 | http://crawler.007ac9.net/ |
| 5 | 5152 | 3.94 | 5 | 0.05 | +http://webmeup-crawler.com/ |
| 6 | 4807 | 3.67 | 1341 | 13.21 | +http://www.easou.com/search/spider.html |
| 7 | 4763 | 3.64 | 3901 | 38.44 | +http://www.baidu.com/search/spider.html |
| 8 | 3003 | 2.30 | 3 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 9 | 1397 | 1.07 | 95 | 0.94 | Windows 98 |
| 10 | 1234 | 0.94 | 110 | 1.08 | +http://yandex.com/bots |
| 11 | 448 | 0.34 | 98 | 0.97 | +http://www.linkdex.com/bots/ |
| 12 | 312 | 0.24 | 98 | 0.97 | +http://www.google.com/bot.html |
| 13 | 302 | 0.23 | 71 | 0.70 | +http://www.bing.com/bingbot.htm |
| 14 | 158 | 0.12 | 117 | 1.15 | Windows 95 |
| 15 | 152 | 0.12 | 62 | 0.61 | http://www.opensiteexplorer.org/dotbot, ... |
| 16 | 148 | 0.11 | 10 | 0.10 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 17 | 44 | 0.03 | 22 | 0.22 | MSIE 5.5; Windows NT 5.0 |
| 18 | 31 | 0.02 | 21 | 0.21 | MSIE 5.5; Windows NT 4.0 |
| 19 | 26 | 0.02 | 23 | 0.23 | Windows CE |
| 20 | 25 | 0.02 | 22 | 0.22 | Windows ME |
| 21 | 24 | 0.02 | 20 | 0.20 | Windows 2000 |
| 22 | 22 | 0.02 | 3 | 0.03 | Windows XP |
| 23 | 20 | 0.02 | 14 | 0.14 | Windows 3.1 |
| 24 | 13 | 0.01 | 10 | 0.10 | ) - BrowseX (2.0.0 Windows |
| 25 | 12 | 0.01 | 6 | 0.06 | http://crawler.sistrix.net/ |
| 26 | 11 | 0.01 | 8 | 0.08 | +http://wmaid.com/explore/ |
| 27 | 10 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 28 | 9 | 0.01 | 4 | 0.04 | X11 |
| 29 | 8 | 0.01 | 0 | 0.00 | Linux i686 [unknown version] |
| 30 | 8 | 0.01 | 4 | 0.04 | +http://www.meanpath.com/meanpathbot.htm... |
| 31 | 6 | 0.00 | 2 | 0.02 | +http://getdownload.ws |
| 32 | 6 | 0.00 | 2 | 0.02 | +http://freedlf.com/ |
| 33 | 6 | 0.00 | 2 | 0.02 | +http://inload.in |
| 34 | 5 | 0.00 | 5 | 0.05 | Auto; Windows |
| 35 | 4 | 0.00 | 2 | 0.02 | not on Windows server; |
| 36 | 3 | 0.00 | 1 | 0.01 | Android 2.3.5 |
| 37 | 2 | 0.00 | 2 | 0.02 | Linux [unknown version] |
| 38 | 2 | 0.00 | 0 | 0.00 | Linux 2.4.x |
| 39 | 2 | 0.00 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 40 | 2 | 0.00 | 2 | 0.02 | Trident/6.0; Windows NT 5.0; SV1; MyIE2;... |
| 41 | 2 | 0.00 | 2 | 0.02 | Trident/6.0; Windows 98; ZangoToolbar 1.... |
