| Used Operating Systems |
| 1 | 21437 | 29.19 | 217 | 1.06 | +http://www.semrush.com/bot.html |
| 2 | 21177 | 28.84 | 15883 | 77.71 | +http://ahrefs.com/robot/ |
| 3 | 9084 | 12.37 | 97 | 0.47 | http://mj12bot.com/ |
| 4 | 6770 | 9.22 | 2 | 0.01 | +http://megaindex.com/crawler |
| 5 | 4739 | 6.45 | 531 | 2.60 | http://www.opensiteexplorer.org/dotbot, ... |
| 6 | 4002 | 5.45 | 1619 | 7.92 | Windows NT |
| 7 | 1601 | 2.18 | 5 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 8 | 1476 | 2.01 | 269 | 1.32 | +http://www.linkdex.com/bots/ |
| 9 | 905 | 1.23 | 740 | 3.62 | +http://www.baidu.com/search/spider.html |
| 10 | 676 | 0.92 | 343 | 1.68 | +http://www.google.com/bot.html |
| 11 | 631 | 0.86 | 139 | 0.68 | +http://yandex.com/bots |
| 12 | 565 | 0.77 | 404 | 1.98 | +http://www.bing.com/bingbot.htm |
| 13 | 239 | 0.33 | 130 | 0.64 | http://help.yahoo.com/help/us/ysearch/sl... |
| 14 | 39 | 0.05 | 36 | 0.18 | +http://www.uptime.com/uptimebot |
| 15 | 27 | 0.04 | 7 | 0.03 | +http://www.exabot.com/go/robot |
| 16 | 14 | 0.02 | 6 | 0.03 | +http://sur.ly/bot.html |
| 17 | 8 | 0.01 | 0 | 0.00 | MSIE 5.5; Windows NT 5.1 |
| 18 | 7 | 0.01 | 3 | 0.01 | +info@netcraft.com |
| 19 | 4 | 0.01 | 0 | 0.00 | https://nmap.org/book/nse.html |
| 20 | 4 | 0.01 | 1 | 0.00 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 21 | 3 | 0.00 | 3 | 0.01 | Windows 95 |
| 22 | 2 | 0.00 | 2 | 0.01 | Windows CE |
| 23 | 2 | 0.00 | 0 | 0.00 | CentOS Linux 5.0 |
| 24 | 2 | 0.00 | 0 | 0.00 | BeOS 2.0 |
| 25 | 2 | 0.00 | 0 | 0.00 | Fedora 2.9 |
| 26 | 2 | 0.00 | 0 | 0.00 | Fedora 2.1 |
| 27 | 2 | 0.00 | 0 | 0.00 | OS 10.5 4.6 |
| 28 | 2 | 0.00 | 0 | 0.00 | Intel Mac OS X 10.6 |
| 29 | 2 | 0.00 | 0 | 0.00 | Debian Linux 2.3 |
| 30 | 1 | 0.00 | 1 | 0.00 | Intel Mac OS X 10.5 |
| 31 | 1 | 0.00 | 1 | 0.00 | X11 |
| 32 | 1 | 0.00 | 0 | 0.00 | Linux i686 [unknown version] |
| 33 | 1 | 0.00 | 1 | 0.00 | Windows XP |
