| Used Operating Systems |
| 1 | 3616 | 33.07 | 1249 | 30.55 | Windows NT |
| 2 | 1965 | 17.97 | 1820 | 44.51 | +http://www.baidu.com/search/spider.html |
| 3 | 1102 | 10.08 | 54 | 1.32 | +http://yandex.com/bots |
| 4 | 827 | 7.56 | 31 | 0.76 | http://www.majestic12.co.uk/bot.php?+ |
| 5 | 722 | 6.60 | 203 | 4.96 | help@moz.com |
| 6 | 555 | 5.07 | 205 | 5.01 | +http://www.bing.com/bingbot.htm |
| 7 | 547 | 5.00 | 161 | 3.94 | +http://www.google.com/bot.html |
| 8 | 369 | 3.37 | 122 | 2.98 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 268 | 2.45 | 8 | 0.20 | +http://www.seoprofiler.com/bot |
| 10 | 259 | 2.37 | 1 | 0.02 | +http://www.warebay.com/bot.html |
| 11 | 156 | 1.43 | 50 | 1.22 | Windows 95 |
| 12 | 96 | 0.88 | 76 | 1.86 | +http://www.mfgpages.com |
| 13 | 88 | 0.80 | 4 | 0.10 | Linux i686 [unknown version] |
| 14 | 41 | 0.37 | 19 | 0.46 | Windows 98 |
| 15 | 34 | 0.31 | 1 | 0.02 | http://www.searchmetrics.com/en/searchme... |
| 16 | 34 | 0.31 | 17 | 0.42 | +http://www.career-x.de/bot.html |
| 17 | 33 | 0.30 | 9 | 0.22 | Windows CE |
| 18 | 30 | 0.27 | 6 | 0.15 | +http://www.profound.net/urlappendbot.ht... |
| 19 | 22 | 0.20 | 3 | 0.07 | +http://siteexplorer.info/ |
| 20 | 21 | 0.19 | 6 | 0.15 | Auto; Windows |
| 21 | 18 | 0.16 | 9 | 0.22 | http://crawler.sistrix.net/ |
| 22 | 16 | 0.15 | 7 | 0.17 | +http://www.exabot.com/go/robot |
| 23 | 14 | 0.13 | 0 | 0.00 | Windows 9. |
| 24 | 12 | 0.11 | 2 | 0.05 | +http://www.semrush.com/bot.html |
| 25 | 10 | 0.09 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 26 | 9 | 0.08 | 2 | 0.05 | Windows XP |
| 27 | 9 | 0.08 | 3 | 0.07 | MSIE 5.5; Windows NT 5.0 |
| 28 | 8 | 0.07 | 4 | 0.10 | Windows 3.1 |
| 29 | 7 | 0.06 | 6 | 0.15 | +info@netcraft.com |
| 30 | 6 | 0.05 | 0 | 0.00 | Win32 |
| 31 | 6 | 0.05 | 2 | 0.05 | Windows 2000 |
| 32 | 6 | 0.05 | 0 | 0.00 | Linux 2.4.x |
| 33 | 6 | 0.05 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 34 | 5 | 0.05 | 0 | 0.00 | Macintosh PPC |
| 35 | 4 | 0.04 | 2 | 0.05 | +http://www.netseer.com/crawler.html; cr... |
| 36 | 4 | 0.04 | 2 | 0.05 | +http://www.grapeshot.co.uk/crawler.php |
| 37 | 3 | 0.03 | 1 | 0.02 | MSIE 5.5; Windows NT 4.0 |
| 38 | 3 | 0.03 | 1 | 0.02 | ) - BrowseX (2.0.0 Windows |
| 39 | 2 | 0.02 | 0 | 0.00 | +http://www.yunyun.com/spider.html |
| 40 | 2 | 0.02 | 2 | 0.05 | Intel Mac OS X 10.4 |
| 41 | 1 | 0.01 | 1 | 0.02 | http://nmap.org/book/nse.html |
