| Used Operating Systems |
| 1 | 19995 | 46.37 | 183 | 2.02 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 5037 | 11.68 | 2696 | 29.80 | Windows NT |
| 3 | 4850 | 11.25 | 3045 | 33.66 | +http://www.baidu.com/search/spider.html |
| 4 | 2706 | 6.27 | 1482 | 16.38 | +http://www.easou.com/search/spider.html |
| 5 | 2594 | 6.02 | 82 | 0.91 | +http://yandex.com/bots |
| 6 | 2227 | 5.16 | 377 | 4.17 | +http://ahrefs.com/robot/ |
| 7 | 1531 | 3.55 | 274 | 3.03 | http://www.opensiteexplorer.org/dotbot, ... |
| 8 | 1444 | 3.35 | 15 | 0.17 | +http://siteexplorer.info/ |
| 9 | 876 | 2.03 | 1 | 0.01 | +http://OpenLinkProfiler.org/bot |
| 10 | 844 | 1.96 | 389 | 4.30 | +http://www.google.com/bot.html |
| 11 | 208 | 0.48 | 139 | 1.54 | +http://www.bing.com/bingbot.htm |
| 12 | 112 | 0.26 | 32 | 0.35 | http://help.yahoo.com/help/us/ysearch/sl... |
| 13 | 99 | 0.23 | 78 | 0.86 | Windows 95 |
| 14 | 70 | 0.16 | 2 | 0.02 | +http://monoid.nic.ru/ |
| 15 | 69 | 0.16 | 10 | 0.11 | Windows 98 |
| 16 | 67 | 0.16 | 21 | 0.23 | +http://www.linkdex.com/bots/ |
| 17 | 67 | 0.16 | 29 | 0.32 | +http://www.exabot.com/go/robot |
| 18 | 35 | 0.08 | 1 | 0.01 | +http://endb-consolidated.aihit.com/ |
| 19 | 28 | 0.06 | 14 | 0.15 | +http://www.meanpath.com/meanpathbot.htm... |
| 20 | 23 | 0.05 | 22 | 0.24 | Auto; Windows |
| 21 | 23 | 0.05 | 20 | 0.22 | MSIE 5.5; Windows NT 4.0 |
| 22 | 21 | 0.05 | 18 | 0.20 | Windows CE |
| 23 | 21 | 0.05 | 21 | 0.23 | Windows 2000 |
| 24 | 20 | 0.05 | 1 | 0.01 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 25 | 18 | 0.04 | 14 | 0.15 | Windows ME |
| 26 | 18 | 0.04 | 2 | 0.02 | Windows XP |
| 27 | 15 | 0.03 | 15 | 0.17 | MSIE 5.5; Windows NT 5.0 |
| 28 | 15 | 0.03 | 14 | 0.15 | ) - BrowseX (2.0.0 Windows |
| 29 | 14 | 0.03 | 12 | 0.13 | +http://wmaid.com/explore/ |
| 30 | 11 | 0.03 | 1 | 0.01 | Linux [unknown version] |
| 31 | 11 | 0.03 | 8 | 0.09 | Windows 3.1 |
| 32 | 11 | 0.03 | 3 | 0.03 | +http://fulltext.sblog.cz/ |
| 33 | 9 | 0.02 | 3 | 0.03 | +http://mydownloadengine.com |
| 34 | 7 | 0.02 | 7 | 0.08 | Intel Mac OS X 10.5 |
| 35 | 6 | 0.01 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 36 | 5 | 0.01 | 3 | 0.03 | Linux i686 [unknown version] |
| 37 | 5 | 0.01 | 4 | 0.04 | +info@netcraft.com |
| 38 | 4 | 0.01 | 3 | 0.03 | FreeBSD [unknown version] |
| 39 | 3 | 0.01 | 1 | 0.01 | +http://inload.me |
| 40 | 2 | 0.00 | 2 | 0.02 | +http://fb02itsscan.fh-muenster.de |
| 41 | 1 | 0.00 | 1 | 0.01 | PPC Mac OS X Mach-O |
| 42 | 1 | 0.00 | 0 | 0.00 | Linux 2.4.x |
| 43 | 1 | 0.00 | 1 | 0.01 | +http://www.xovibot.net/ |
