| Used Operating Systems |
| 1 | 23454 | 37.11 | 172 | 2.06 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 13782 | 21.81 | 1778 | 21.33 | +http://www.xovibot.net/ |
| 3 | 11386 | 18.02 | 90 | 1.08 | +http://ahrefs.com/robot/ |
| 4 | 4336 | 6.86 | 3334 | 40.00 | +http://www.baidu.com/search/spider.html |
| 5 | 4221 | 6.68 | 1553 | 18.63 | Windows NT |
| 6 | 1502 | 2.38 | 282 | 3.38 | +http://www.bing.com/bingbot.htm |
| 7 | 1283 | 2.03 | 17 | 0.20 | +http://OpenLinkProfiler.org/bot |
| 8 | 803 | 1.27 | 223 | 2.68 | +http://www.linkdex.com/bots/ |
| 9 | 669 | 1.06 | 323 | 3.88 | +http://www.google.com/bot.html |
| 10 | 401 | 0.63 | 1 | 0.01 | +http://megaindex.com/crawler |
| 11 | 378 | 0.60 | 105 | 1.26 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 164 | 0.26 | 140 | 1.68 | Windows 95 |
| 13 | 130 | 0.21 | 25 | 0.30 | Windows 98 |
| 14 | 115 | 0.18 | 25 | 0.30 | +http://yandex.com/bots |
| 15 | 111 | 0.18 | 20 | 0.24 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 84 | 0.13 | 2 | 0.02 | Linux i686 [unknown version] |
| 17 | 46 | 0.07 | 15 | 0.18 | +http://www.exabot.com/go/robot |
| 18 | 34 | 0.05 | 29 | 0.35 | Auto; Windows |
| 19 | 32 | 0.05 | 28 | 0.34 | Windows ME |
| 20 | 27 | 0.04 | 2 | 0.02 | Windows XP |
| 21 | 27 | 0.04 | 26 | 0.31 | MSIE 5.5; Windows NT 5.0 |
| 22 | 27 | 0.04 | 25 | 0.30 | MSIE 5.5; Windows NT 4.0 |
| 23 | 26 | 0.04 | 23 | 0.28 | Windows 2000 |
| 24 | 26 | 0.04 | 23 | 0.28 | ) - BrowseX (2.0.0 Windows |
| 25 | 24 | 0.04 | 23 | 0.28 | Windows 3.1 |
| 26 | 23 | 0.04 | 1 | 0.01 | +http://www.semrush.com/bot.html |
| 27 | 19 | 0.03 | 18 | 0.22 | Windows CE |
| 28 | 18 | 0.03 | 2 | 0.02 | http://www.opensiteexplorer.org/dotbot, ... |
| 29 | 16 | 0.03 | 14 | 0.17 | +info@netcraft.com |
| 30 | 13 | 0.02 | 1 | 0.01 | +https://www.lipperhey.com/en/about/ |
| 31 | 6 | 0.01 | 6 | 0.07 | actually this is http://ismyblogworking.... |
| 32 | 5 | 0.01 | 5 | 0.06 | +http://domainsigma.com/robot |
| 33 | 4 | 0.01 | 2 | 0.02 | +http://www.meanpath.com/meanpathbot.htm... |
| 34 | 3 | 0.00 | 1 | 0.01 | +http://prlog.ru/ |
| 35 | 2 | 0.00 | 1 | 0.01 | X11 |
| 36 | 1 | 0.00 | 0 | 0.00 | OSF1 alpha |
