| Used Operating Systems |
| 1 | 19594 | 33.26 | 17134 | 79.16 | +http://ahrefs.com/robot/ |
| 2 | 16883 | 28.66 | 127 | 0.59 | http://mj12bot.com/ |
| 3 | 6047 | 10.26 | 37 | 0.17 | http://www.majestic12.co.uk/bot.php?+ |
| 4 | 5085 | 8.63 | 624 | 2.88 | Windows NT |
| 5 | 3005 | 5.10 | 3 | 0.01 | +http://OpenLinkProfiler.org/bot |
| 6 | 2769 | 4.70 | 887 | 4.10 | +http://www.google.com/bot.html |
| 7 | 2290 | 3.89 | 2209 | 10.21 | +http://www.baidu.com/search/spider.html |
| 8 | 1044 | 1.77 | 209 | 0.97 | +http://yandex.com/bots |
| 9 | 894 | 1.52 | 6 | 0.03 | +http://siteexplorer.info/Backlink-Check... |
| 10 | 549 | 0.93 | 159 | 0.73 | +http://www.bing.com/bingbot.htm |
| 11 | 504 | 0.86 | 147 | 0.68 | +http://www.linkdex.com/bots/ |
| 12 | 71 | 0.12 | 8 | 0.04 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 36 | 0.06 | 5 | 0.02 | +spider@seoscanners.net |
| 14 | 24 | 0.04 | 11 | 0.05 | Windows XP |
| 15 | 18 | 0.03 | 14 | 0.06 | Windows 95 |
| 16 | 17 | 0.03 | 13 | 0.06 | Windows 98 |
| 17 | 14 | 0.02 | 7 | 0.03 | +http://www.exabot.com/go/robot |
| 18 | 10 | 0.02 | 5 | 0.02 | http://help.yahoo.com/help/us/ysearch/sl... |
| 19 | 9 | 0.02 | 5 | 0.02 | MSIE 5.5; Windows NT 4.0 |
| 20 | 8 | 0.01 | 6 | 0.03 | Windows 2000 |
| 21 | 8 | 0.01 | 4 | 0.02 | +http://duckduckgo.com |
| 22 | 6 | 0.01 | 4 | 0.02 | MSIE 5.5; Windows NT 5.0 |
| 23 | 4 | 0.01 | 3 | 0.01 | Auto; Windows |
| 24 | 4 | 0.01 | 4 | 0.02 | +http://8pw.ru/virus |
| 25 | 4 | 0.01 | 4 | 0.02 | Windows ME |
| 26 | 3 | 0.01 | 3 | 0.01 | ) - BrowseX (2.0.0 Windows |
| 27 | 3 | 0.01 | 2 | 0.01 | +info@netcraft.com |
| 28 | 2 | 0.00 | 2 | 0.01 | Windows CE |
| 29 | 2 | 0.00 | 2 | 0.01 | Windows 3.1 |
| 30 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 31 | 1 | 0.00 | 1 | 0.00 | Linux [unknown version] |
| 32 | 1 | 0.00 | 1 | 0.00 | http://nmap.org/book/nse.html |
