| Used Operating Systems |
| 1 | 19864 | 71.23 | 5780 | 72.34 | Windows NT |
| 2 | 2254 | 8.08 | 111 | 1.39 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 1641 | 5.88 | 1408 | 17.62 | +http://www.baidu.com/search/spider.html |
| 4 | 1120 | 4.02 | 38 | 0.48 | Windows 98 |
| 5 | 771 | 2.76 | 3 | 0.04 | +http://OpenLinkProfiler.org/bot |
| 6 | 451 | 1.62 | 124 | 1.55 | +http://www.google.com/bot.html |
| 7 | 384 | 1.38 | 170 | 2.13 | +http://www.bing.com/bingbot.htm |
| 8 | 351 | 1.26 | 112 | 1.40 | +http://www.linkdex.com/about/bots/ |
| 9 | 310 | 1.11 | 31 | 0.39 | +http://yandex.com/bots |
| 10 | 157 | 0.56 | 48 | 0.60 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 120 | 0.43 | 40 | 0.50 | help@moz.com |
| 12 | 103 | 0.37 | 19 | 0.24 | X11 |
| 13 | 96 | 0.34 | 2 | 0.03 | +http://endb-consolidated.aihit.com/ |
| 14 | 50 | 0.18 | 11 | 0.14 | Android 2.3.5 |
| 15 | 44 | 0.16 | 20 | 0.25 | +http://www.exabot.com/go/robot |
| 16 | 40 | 0.14 | 18 | 0.23 | Windows 95 |
| 17 | 19 | 0.07 | 8 | 0.10 | ) - BrowseX (2.0.0 Windows |
| 18 | 18 | 0.06 | 8 | 0.10 | Windows ME |
| 19 | 12 | 0.04 | 4 | 0.05 | +http://www.profound.net/urlappendbot.ht... |
| 20 | 8 | 0.03 | 4 | 0.05 | Windows CE |
| 21 | 8 | 0.03 | 4 | 0.05 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 22 | 7 | 0.03 | 3 | 0.04 | MSIE 5.5; Windows NT 5.0 |
| 23 | 6 | 0.02 | 2 | 0.03 | Auto; Windows |
| 24 | 6 | 0.02 | 3 | 0.04 | http://crawler.sistrix.net/ |
| 25 | 5 | 0.02 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 26 | 4 | 0.01 | 1 | 0.01 | +http://www.proximic.com/info/spider.php |
| 27 | 4 | 0.01 | 0 | 0.00 | Linux 2.4.x |
| 28 | 4 | 0.01 | 2 | 0.03 | Windows 3.1 |
| 29 | 4 | 0.01 | 2 | 0.03 | +http://fulltext.sblog.cz/ |
| 30 | 3 | 0.01 | 0 | 0.00 | Macintosh PPC |
| 31 | 3 | 0.01 | 1 | 0.01 | Windows XP |
| 32 | 3 | 0.01 | 3 | 0.04 | Linux i686 [unknown version] |
| 33 | 3 | 0.01 | 2 | 0.03 | WinHttp.WinHttpRequest.5 |
| 34 | 2 | 0.01 | 1 | 0.01 | Linux [unknown version] |
| 35 | 2 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 36 | 2 | 0.01 | 1 | 0.01 | +info@netcraft.com |
| 37 | 2 | 0.01 | 1 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 38 | 2 | 0.01 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
| 39 | 1 | 0.00 | 0 | 0.00 | Win32 |
| 40 | 1 | 0.00 | 0 | 0.00 | Android |
| 41 | 1 | 0.00 | 1 | 0.01 | Intel Mac OS X 10.5 |
| 42 | 1 | 0.00 | 1 | 0.01 | +http://www.easou.com/search/spider.html |
| 43 | 1 | 0.00 | 1 | 0.01 | MSIE 5.5; Windows NT 4.0 |
| 44 | 1 | 0.00 | 1 | 0.01 | FreeBSD [unknown version] |
