| Used Operating Systems |
| 1 | 4743 | 53.07 | 86 | 6.40 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 1070 | 11.97 | 615 | 45.76 | Windows NT |
| 3 | 836 | 9.35 | 4 | 0.30 | Linux i686 [unknown version] |
| 4 | 540 | 6.04 | 4 | 0.30 | +http://OpenLinkProfiler.org/bot |
| 5 | 537 | 6.01 | 95 | 7.07 | +http://yandex.com/bots |
| 6 | 507 | 5.67 | 322 | 23.96 | +http://www.baidu.com/search/spider.html |
| 7 | 331 | 3.70 | 89 | 6.62 | +http://ahrefs.com/robot/ |
| 8 | 126 | 1.41 | 57 | 4.24 | +http://www.google.com/bot.html |
| 9 | 62 | 0.69 | 22 | 1.64 | +http://www.linkdex.com/bots/ |
| 10 | 51 | 0.57 | 13 | 0.97 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 38 | 0.43 | 10 | 0.74 | +http://www.exabot.com/go/robot |
| 12 | 26 | 0.29 | 4 | 0.30 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 24 | 0.27 | 12 | 0.89 | +http://www.meanpath.com/meanpathbot.htm... |
| 14 | 16 | 0.18 | 5 | 0.37 | +http://www.bing.com/bingbot.htm |
| 15 | 12 | 0.13 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 16 | 6 | 0.07 | 2 | 0.15 | X11 |
| 17 | 4 | 0.04 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 18 | 4 | 0.04 | 0 | 0.00 | Intel Mac OS X 10.6 |
| 19 | 2 | 0.02 | 2 | 0.15 | http://www.bing.com/bingbot.htm |
| 20 | 2 | 0.02 | 2 | 0.15 | +info@netcraft.com |
