| Used Operating Systems |
| 1 | 38974 | 38.75 | 333 | 1.23 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 23029 | 22.90 | 18391 | 67.97 | +http://www.baidu.com/search/spider.html |
| 3 | 5636 | 5.60 | 1618 | 5.98 | +http://www.google.com/bot.html |
| 4 | 5596 | 5.56 | 1589 | 5.87 | +http://www.bing.com/bingbot.htm |
| 5 | 5194 | 5.16 | 2143 | 7.92 | Windows NT |
| 6 | 5004 | 4.98 | 399 | 1.47 | +http://ahrefs.com/robot/ |
| 7 | 3546 | 3.53 | 282 | 1.04 | +http://yandex.com/bots |
| 8 | 2972 | 2.96 | 287 | 1.06 | +http://www.semrush.com/bot.html |
| 9 | 1867 | 1.86 | 2 | 0.01 | +http://OpenLinkProfiler.org/bot |
| 10 | 1853 | 1.84 | 2 | 0.01 | +http://webmeup-crawler.com/ |
| 11 | 1819 | 1.81 | 5 | 0.02 | +http://www.findxbot.com |
| 12 | 1620 | 1.61 | 500 | 1.85 | +http://www.xovibot.net/ |
| 13 | 1223 | 1.22 | 558 | 2.06 | +http://www.linkdex.com/bots/ |
| 14 | 571 | 0.57 | 144 | 0.53 | +http://www.exabot.com/go/robot |
| 15 | 505 | 0.50 | 357 | 1.32 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 252 | 0.25 | 3 | 0.01 | Linux i586 [unknown version] |
| 17 | 140 | 0.14 | 1 | 0.00 | http://www.searchmetrics.com/en/searchme... |
| 18 | 125 | 0.12 | 56 | 0.21 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 19 | 108 | 0.11 | 87 | 0.32 | Windows 95 |
| 20 | 81 | 0.08 | 36 | 0.13 | Windows 98 |
| 21 | 60 | 0.06 | 10 | 0.04 | +http://www.profound.net/domainappender |
| 22 | 58 | 0.06 | 28 | 0.10 | +http://www.proximic.com/info/spider.php |
| 23 | 28 | 0.03 | 8 | 0.03 | +http://fulltext.sblog.cz/ |
| 24 | 27 | 0.03 | 22 | 0.08 | Windows CE |
| 25 | 25 | 0.02 | 21 | 0.08 | MSIE 5.5; Windows NT 4.0 |
| 26 | 23 | 0.02 | 21 | 0.08 | Windows 3.1 |
| 27 | 23 | 0.02 | 19 | 0.07 | ) - BrowseX (2.0.0 Windows |
| 28 | 22 | 0.02 | 22 | 0.08 | Windows 2000 |
| 29 | 21 | 0.02 | 16 | 0.06 | Windows ME |
| 30 | 20 | 0.02 | 17 | 0.06 | Auto; Windows |
| 31 | 20 | 0.02 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 32 | 20 | 0.02 | 10 | 0.04 | +http://duckduckgo.com |
| 33 | 18 | 0.02 | 10 | 0.04 | +http://www.grapeshot.co.uk/crawler.php |
| 34 | 17 | 0.02 | 9 | 0.03 | Windows XP |
| 35 | 16 | 0.02 | 7 | 0.03 | +http://help.coccoc.com/ |
| 36 | 13 | 0.01 | 13 | 0.05 | MSIE 5.5; Windows NT 5.0 |
| 37 | 8 | 0.01 | 8 | 0.03 | X11 |
| 38 | 8 | 0.01 | 4 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 39 | 6 | 0.01 | 5 | 0.02 | Intel Mac OS X 10.6 |
| 40 | 4 | 0.00 | 2 | 0.01 | +http://www.netseer.com/crawler.html; cr... |
| 41 | 4 | 0.00 | 2 | 0.01 | +http://gimmeusa-update.com/crawler |
| 42 | 4 | 0.00 | 1 | 0.00 | http://www.opensiteexplorer.org/dotbot, ... |
| 43 | 3 | 0.00 | 3 | 0.01 | Linux i686 [unknown version] |
| 44 | 3 | 0.00 | 1 | 0.00 | +http://prlog.ru/ |
| 45 | 2 | 0.00 | 1 | 0.00 | +info@netcraft.com |
| 46 | 2 | 0.00 | 1 | 0.00 | +http://www.bigbozz.com/ |
| 47 | 1 | 0.00 | 1 | 0.00 | +http://www.seograph.net/bot.html |
| 48 | 1 | 0.00 | 1 | 0.00 | PPC Mac OS X Mach-O |
| 49 | 1 | 0.00 | 1 | 0.00 | http://nmap.org/book/nse.html |
