| Used Operating Systems |
| 1 | 20002 | 35.01 | 156 | 3.67 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 19264 | 33.71 | 60 | 1.41 | +http://ahrefs.com/robot/ |
| 3 | 6049 | 10.59 | 7 | 0.16 | +http://OpenLinkProfiler.org/bot |
| 4 | 3692 | 6.46 | 2 | 0.05 | +http://megaindex.com/crawler |
| 5 | 2054 | 3.59 | 1835 | 43.21 | +http://www.baidu.com/search/spider.html |
| 6 | 1981 | 3.47 | 549 | 12.93 | Windows NT |
| 7 | 1980 | 3.47 | 894 | 21.05 | +http://www.google.com/bot.html |
| 8 | 874 | 1.53 | 220 | 5.18 | +http://yandex.com/bots |
| 9 | 391 | 0.68 | 195 | 4.59 | +http://www.bing.com/bingbot.htm |
| 10 | 276 | 0.48 | 68 | 1.60 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 190 | 0.33 | 56 | 1.32 | +http://www.linkdex.com/bots/ |
| 12 | 108 | 0.19 | 72 | 1.70 | http://help.yahoo.com/help/us/ysearch/sl... |
| 13 | 68 | 0.12 | 21 | 0.49 | Windows XP |
| 14 | 30 | 0.05 | 12 | 0.28 | http://www.opensiteexplorer.org/dotbot, ... |
| 15 | 27 | 0.05 | 22 | 0.52 | Windows 95 |
| 16 | 22 | 0.04 | 9 | 0.21 | Windows 98 |
| 17 | 18 | 0.03 | 9 | 0.21 | +http://duckduckgo.com |
| 18 | 14 | 0.02 | 1 | 0.02 | +http://filterdb.iss.net/crawler/ |
| 19 | 14 | 0.02 | 7 | 0.16 | +http://www.exabot.com/go/robot |
| 20 | 12 | 0.02 | 6 | 0.14 | Windows 3.1 |
| 21 | 12 | 0.02 | 1 | 0.02 | +https://www.lipperhey.com/en/about/ |
| 22 | 9 | 0.02 | 7 | 0.16 | ) - BrowseX (2.0.0 Windows |
| 23 | 8 | 0.01 | 5 | 0.12 | Windows 2000 |
| 24 | 7 | 0.01 | 5 | 0.12 | MSIE 5.5; Windows NT 5.0 |
| 25 | 5 | 0.01 | 0 | 0.00 | Linux [unknown version] |
| 26 | 5 | 0.01 | 5 | 0.12 | Windows ME |
| 27 | 4 | 0.01 | 4 | 0.09 | Windows CE |
| 28 | 4 | 0.01 | 4 | 0.09 | Auto; Windows |
| 29 | 4 | 0.01 | 4 | 0.09 | MSIE 5.5; Windows NT 4.0 |
| 30 | 4 | 0.01 | 2 | 0.05 | +http://www.meanpath.com/meanpathbot.htm... |
| 31 | 3 | 0.01 | 3 | 0.07 | +http://www.domaintuno.com/robot |
| 32 | 3 | 0.01 | 2 | 0.05 | +info@netcraft.com |
| 33 | 3 | 0.01 | 3 | 0.07 | Linux i686 [unknown version] |
| 34 | 1 | 0.00 | 1 | 0.02 | Windows 9x |
