| Used Operating Systems |
| 1 | 21341 | 88.07 | 5228 | 75.37 | Windows NT |
| 2 | 1196 | 4.94 | 1137 | 16.39 | +http://www.baidu.com/search/spider.html |
| 3 | 317 | 1.31 | 17 | 0.25 | +http://yandex.com/bots |
| 4 | 236 | 0.97 | 101 | 1.46 | +http://www.google.com/bot.html |
| 5 | 233 | 0.96 | 45 | 0.65 | Windows 98 |
| 6 | 214 | 0.88 | 95 | 1.37 | +http://www.bing.com/bingbot.htm |
| 7 | 126 | 0.52 | 61 | 0.88 | http://www.majestic12.co.uk/bot.php?+ |
| 8 | 106 | 0.44 | 4 | 0.06 | X11 |
| 9 | 97 | 0.40 | 79 | 1.14 | Windows 95 |
| 10 | 49 | 0.20 | 13 | 0.19 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 49 | 0.20 | 2 | 0.03 | Android 2.3.5 |
| 12 | 38 | 0.16 | 19 | 0.27 | help@moz.com |
| 13 | 18 | 0.07 | 8 | 0.12 | Windows XP |
| 14 | 17 | 0.07 | 15 | 0.22 | Windows CE |
| 15 | 16 | 0.07 | 12 | 0.17 | Windows 3.1 |
| 16 | 16 | 0.07 | 8 | 0.12 | +http://www.career-x.de/bot.html |
| 17 | 15 | 0.06 | 14 | 0.20 | Windows ME |
| 18 | 14 | 0.06 | 2 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 19 | 12 | 0.05 | 10 | 0.14 | Auto; Windows |
| 20 | 11 | 0.05 | 9 | 0.13 | MSIE 5.5; Windows NT 5.0 |
| 21 | 10 | 0.04 | 10 | 0.14 | MSIE 5.5; Windows NT 4.0 |
| 22 | 9 | 0.04 | 9 | 0.13 | Windows 2000 |
| 23 | 8 | 0.03 | 4 | 0.06 | http://crawler.sistrix.net/ |
| 24 | 8 | 0.03 | 1 | 0.01 | +http://webmeup-crawler.com/ |
| 25 | 8 | 0.03 | 8 | 0.12 | ) - BrowseX (2.0.0 Windows |
| 26 | 8 | 0.03 | 4 | 0.06 | +http://www.exabot.com/go/robot |
| 27 | 8 | 0.03 | 3 | 0.04 | +http://fulltext.sblog.cz/ |
| 28 | 6 | 0.02 | 1 | 0.01 | +http://www.linkpad.ru |
| 29 | 6 | 0.02 | 4 | 0.06 | +http://help.coccoc.com/ |
| 30 | 5 | 0.02 | 0 | 0.00 | Win32 |
| 31 | 4 | 0.02 | 2 | 0.03 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 32 | 4 | 0.02 | 0 | 0.00 | Macintosh PPC |
| 33 | 4 | 0.02 | 3 | 0.04 | +http://www.easou.com/search/spider.html |
| 34 | 3 | 0.01 | 1 | 0.01 | +http://fb02itsscan.fh-muenster.de |
| 35 | 3 | 0.01 | 0 | 0.00 | Linux 2.4.x |
| 36 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 37 | 2 | 0.01 | 1 | 0.01 | +http://www.yunyun.com/spider.html |
| 38 | 2 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 39 | 2 | 0.01 | 1 | 0.01 | +info@netcraft.com |
| 40 | 2 | 0.01 | 1 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 41 | 2 | 0.01 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
| 42 | 1 | 0.00 | 1 | 0.01 | Linux [unknown version] |
| 43 | 1 | 0.00 | 0 | 0.00 | +http://siteexplorer.info/ |
| 44 | 1 | 0.00 | 1 | 0.01 | +http://www.semrush.com/bot.html |
| 45 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
