| Used Operating Systems |
| 1 | 13879 | 62.36 | 4503 | 64.19 | Windows NT |
| 2 | 3350 | 15.05 | 132 | 1.88 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 1669 | 7.50 | 1546 | 22.04 | +http://www.baidu.com/search/spider.html |
| 4 | 887 | 3.99 | 147 | 2.10 | +http://www.google.com/bot.html |
| 5 | 618 | 2.78 | 60 | 0.86 | +http://yandex.com/bots |
| 6 | 459 | 2.06 | 215 | 3.06 | +http://www.bing.com/bingbot.htm |
| 7 | 327 | 1.47 | 101 | 1.44 | +http://www.linkdex.com/about/bots/ |
| 8 | 182 | 0.82 | 57 | 0.81 | Windows 95 |
| 9 | 144 | 0.65 | 3 | 0.04 | +http://endb-consolidated.aihit.com/ |
| 10 | 141 | 0.63 | 47 | 0.67 | +http://www.profound.net/urlappendbot.ht... |
| 11 | 139 | 0.62 | 47 | 0.67 | help@moz.com |
| 12 | 75 | 0.34 | 5 | 0.07 | +http://www.seoprofiler.com/bot |
| 13 | 70 | 0.31 | 16 | 0.23 | X11 |
| 14 | 39 | 0.18 | 9 | 0.13 | Android 2.3.5 |
| 15 | 30 | 0.13 | 16 | 0.23 | +http://www.exabot.com/go/robot |
| 16 | 27 | 0.12 | 10 | 0.14 | Windows 98 |
| 17 | 23 | 0.10 | 8 | 0.11 | Auto; Windows |
| 18 | 23 | 0.10 | 13 | 0.19 | http://help.yahoo.com/help/us/ysearch/sl... |
| 19 | 20 | 0.09 | 6 | 0.09 | +http://www.meanpath.com/meanpathbot.htm... |
| 20 | 19 | 0.09 | 8 | 0.11 | ) - BrowseX (2.0.0 Windows |
| 21 | 16 | 0.07 | 8 | 0.11 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 22 | 12 | 0.05 | 5 | 0.07 | +http://www.semrush.com/bot.html |
| 23 | 11 | 0.05 | 5 | 0.07 | Windows CE |
| 24 | 10 | 0.04 | 5 | 0.07 | http://crawler.sistrix.net/ |
| 25 | 10 | 0.04 | 6 | 0.09 | Windows ME |
| 26 | 10 | 0.04 | 8 | 0.11 | MSIE 5.5; Windows NT 4.0 |
| 27 | 8 | 0.04 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 28 | 7 | 0.03 | 0 | 0.00 | Macintosh PPC |
| 29 | 5 | 0.02 | 0 | 0.00 | Linux 2.4.x |
| 30 | 5 | 0.02 | 5 | 0.07 | Linux [unknown version] |
| 31 | 5 | 0.02 | 3 | 0.04 | Windows XP |
| 32 | 4 | 0.02 | 4 | 0.06 | Windows 2000 |
| 33 | 4 | 0.02 | 0 | 0.00 | Series 60 |
| 34 | 4 | 0.02 | 4 | 0.06 | Intel Mac OS X |
| 35 | 4 | 0.02 | 4 | 0.06 | Intel Mac OS X 10.5 |
| 36 | 3 | 0.01 | 0 | 0.00 | Win32 |
| 37 | 3 | 0.01 | 2 | 0.03 | Windows 3.1 |
| 38 | 3 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 39 | 3 | 0.01 | 1 | 0.01 | MSIE 5.5; Windows NT 5.0 |
| 40 | 2 | 0.01 | 2 | 0.03 | http://nmap.org/book/nse.html |
| 41 | 2 | 0.01 | 1 | 0.01 | +http://www.netseer.com/crawler.html; cr... |
| 42 | 2 | 0.01 | 1 | 0.01 | +info@netcraft.com |
| 43 | 2 | 0.01 | 2 | 0.03 | Linux i686 [unknown version] |
