| Used Operating Systems |
| 1 | 8735 | 44.76 | 4766 | 61.09 | Windows NT |
| 2 | 3056 | 15.66 | 121 | 1.55 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 1569 | 8.04 | 1506 | 19.31 | +http://www.baidu.com/search/spider.html |
| 4 | 1168 | 5.99 | 2 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 5 | 713 | 3.65 | 57 | 0.73 | Windows 98 |
| 6 | 580 | 2.97 | 153 | 1.96 | +http://yandex.com/bots |
| 7 | 569 | 2.92 | 1 | 0.01 | +http://webmeup-crawler.com/ |
| 8 | 538 | 2.76 | 302 | 3.87 | +http://www.google.com/bot.html |
| 9 | 469 | 2.40 | 4 | 0.05 | +http://www.warebay.com/bot.html |
| 10 | 415 | 2.13 | 156 | 2.00 | +http://ahrefs.com/robot/ |
| 11 | 385 | 1.97 | 135 | 1.73 | http://www.opensiteexplorer.org/dotbot, ... |
| 12 | 372 | 1.91 | 102 | 1.31 | +http://www.linkdex.com/bots/ |
| 13 | 368 | 1.89 | 180 | 2.31 | +http://www.bing.com/bingbot.htm |
| 14 | 146 | 0.75 | 104 | 1.33 | Windows 95 |
| 15 | 57 | 0.29 | 17 | 0.22 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 48 | 0.25 | 1 | 0.01 | +http://endb-consolidated.aihit.com/ |
| 17 | 37 | 0.19 | 17 | 0.22 | +http://www.exabot.com/go/robot |
| 18 | 32 | 0.16 | 28 | 0.36 | Windows 2000 |
| 19 | 32 | 0.16 | 21 | 0.27 | Windows 3.1 |
| 20 | 28 | 0.14 | 3 | 0.04 | Windows XP |
| 21 | 28 | 0.14 | 24 | 0.31 | MSIE 5.5; Windows NT 4.0 |
| 22 | 27 | 0.14 | 25 | 0.32 | Windows CE |
| 23 | 26 | 0.13 | 24 | 0.31 | MSIE 5.5; Windows NT 5.0 |
| 24 | 22 | 0.11 | 10 | 0.13 | X11 |
| 25 | 16 | 0.08 | 11 | 0.14 | +http://wmaid.com/explore/ |
| 26 | 13 | 0.07 | 9 | 0.12 | Windows ME |
| 27 | 10 | 0.05 | 5 | 0.06 | http://crawler.sistrix.net/ |
| 28 | 9 | 0.05 | 1 | 0.01 | AOL 9.7; AOLBuild 4343.1028; Windows NT ... |
| 29 | 9 | 0.05 | 5 | 0.06 | Android 2.3.5 |
| 30 | 6 | 0.03 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 31 | 5 | 0.03 | 0 | 0.00 | Linux [unknown version] |
| 32 | 4 | 0.02 | 1 | 0.01 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 33 | 4 | 0.02 | 4 | 0.05 | Linux i686 [unknown version] |
| 34 | 4 | 0.02 | 2 | 0.03 | +http://www.meanpath.com/meanpathbot.htm... |
| 35 | 3 | 0.02 | 0 | 0.00 | Macintosh PPC |
| 36 | 3 | 0.02 | 1 | 0.01 | +http://getdownload.ws |
| 37 | 3 | 0.02 | 1 | 0.01 | +http://inload.in |
| 38 | 3 | 0.02 | 2 | 0.03 | +info@netcraft.com |
| 39 | 2 | 0.01 | 0 | 0.00 | Linux 2.4.x |
| 40 | 1 | 0.01 | 0 | 0.00 | PPC Mac OS X 10.4 |
