| Used Operating Systems |
| 1 | 19092 | 23.78 | 142 | 1.35 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 14843 | 18.49 | 196 | 1.87 | +http://ahrefs.com/robot/ |
| 3 | 14752 | 18.38 | 2773 | 26.46 | Windows NT |
| 4 | 9305 | 11.59 | 425 | 4.06 | +http://yandex.com/bots |
| 5 | 8356 | 10.41 | 1332 | 12.71 | +http://www.xovibot.net/ |
| 6 | 5144 | 6.41 | 4331 | 41.33 | +http://www.baidu.com/search/spider.html |
| 7 | 3200 | 3.99 | 1 | 0.01 | +http://megaindex.com/crawler |
| 8 | 2543 | 3.17 | 14 | 0.13 | +http://OpenLinkProfiler.org/bot |
| 9 | 1551 | 1.93 | 735 | 7.01 | +http://www.google.com/bot.html |
| 10 | 514 | 0.64 | 204 | 1.95 | +http://www.bing.com/bingbot.htm |
| 11 | 281 | 0.35 | 127 | 1.21 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 215 | 0.27 | 48 | 0.46 | +http://www.exabot.com/go/robot |
| 13 | 172 | 0.21 | 30 | 0.29 | +http://www.linkdex.com/bots/ |
| 14 | 85 | 0.11 | 21 | 0.20 | http://help.yahoo.com/help/us/ysearch/sl... |
| 15 | 58 | 0.07 | 16 | 0.15 | +http://sur.ly/bot.html |
| 16 | 31 | 0.04 | 11 | 0.10 | http://www.opensiteexplorer.org/dotbot, ... |
| 17 | 22 | 0.03 | 14 | 0.13 | Linux i686 [unknown version] |
| 18 | 14 | 0.02 | 1 | 0.01 | +https://www.lipperhey.com/en/about/ |
| 19 | 14 | 0.02 | 2 | 0.02 | http://filterdb.iss.net/crawler/ |
| 20 | 13 | 0.02 | 1 | 0.01 | +http://filterdb.iss.net/crawler/ |
| 21 | 11 | 0.01 | 10 | 0.10 | +info@netcraft.com |
| 22 | 10 | 0.01 | 10 | 0.10 | Linux [unknown version] |
| 23 | 10 | 0.01 | 10 | 0.10 | Linux i586 [unknown version] |
| 24 | 8 | 0.01 | 4 | 0.04 | +http://duckduckgo.com |
| 25 | 5 | 0.01 | 1 | 0.01 | Windows 98 |
| 26 | 4 | 0.00 | 2 | 0.02 | +http://www.meanpath.com/meanpathbot.htm... |
| 27 | 3 | 0.00 | 2 | 0.02 | Windows 95 |
| 28 | 2 | 0.00 | 2 | 0.02 | Windows 2000 |
| 29 | 2 | 0.00 | 2 | 0.02 | http://nmap.org/book/nse.html |
| 30 | 2 | 0.00 | 2 | 0.02 | Windows XP |
| 31 | 2 | 0.00 | 2 | 0.02 | MSIE 5.5; Windows NT 5.0 |
| 32 | 1 | 0.00 | 1 | 0.01 | Intel Mac OS X |
| 33 | 1 | 0.00 | 1 | 0.01 | Windows 3.1 |
| 34 | 1 | 0.00 | 1 | 0.01 | Windows ME |
| 35 | 1 | 0.00 | 1 | 0.01 | SunOS i86pc |
| 36 | 1 | 0.00 | 1 | 0.01 | Linux 2.4.x |
| 37 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 38 | 1 | 0.00 | 1 | 0.01 | Macintosh |
| 39 | 1 | 0.00 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 40 | 1 | 0.00 | 1 | 0.01 | FreeBSD [unknown version] |
| 41 | 1 | 0.00 | 1 | 0.01 | PPC Mac OS X Mach-O |
| 42 | 1 | 0.00 | 1 | 0.01 | Solaris 8.x |
