| Used Operating Systems |
| 1 | 19607 | 37.41 | 211 | 1.43 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 9311 | 17.76 | 7243 | 49.25 | +http://ahrefs.com/robot/ |
| 3 | 7964 | 15.19 | 875 | 5.95 | Windows NT |
| 4 | 5770 | 11.01 | 4805 | 32.67 | +http://www.baidu.com/search/spider.html |
| 5 | 3762 | 7.18 | 468 | 3.18 | +http://www.bing.com/bingbot.htm |
| 6 | 2990 | 5.70 | 222 | 1.51 | +http://yandex.com/bots |
| 7 | 1267 | 2.42 | 4 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 8 | 696 | 1.33 | 245 | 1.67 | +http://www.linkdex.com/bots/ |
| 9 | 345 | 0.66 | 265 | 1.80 | +http://www.xovibot.net/ |
| 10 | 299 | 0.57 | 165 | 1.12 | +http://www.google.com/bot.html |
| 11 | 93 | 0.18 | 30 | 0.20 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 69 | 0.13 | 45 | 0.31 | Windows 95 |
| 13 | 37 | 0.07 | 15 | 0.10 | http://help.yahoo.com/help/us/ysearch/sl... |
| 14 | 30 | 0.06 | 14 | 0.10 | Windows 98 |
| 15 | 24 | 0.05 | 7 | 0.05 | +spider@seoscanners.net |
| 16 | 23 | 0.04 | 14 | 0.10 | MSIE 5.5; Windows NT 5.0 |
| 17 | 22 | 0.04 | 13 | 0.09 | Windows XP |
| 18 | 18 | 0.03 | 12 | 0.08 | Windows CE |
| 19 | 16 | 0.03 | 4 | 0.03 | http://www.opensiteexplorer.org/dotbot, ... |
| 20 | 15 | 0.03 | 12 | 0.08 | MSIE 5.5; Windows NT 4.0 |
| 21 | 13 | 0.02 | 8 | 0.05 | Windows 3.1 |
| 22 | 13 | 0.02 | 1 | 0.01 | +https://www.dataprovider.com/ |
| 23 | 10 | 0.02 | 7 | 0.05 | Windows ME |
| 24 | 9 | 0.02 | 9 | 0.06 | Auto; Windows |
| 25 | 8 | 0.02 | 7 | 0.05 | Windows 2000 |
| 26 | 3 | 0.01 | 2 | 0.01 | +info@netcraft.com |
| 27 | 2 | 0.00 | 2 | 0.01 | ) - BrowseX (2.0.0 Windows |
| 28 | 1 | 0.00 | 1 | 0.01 | +http://sur.ly/bot.html |
| 29 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
