| Used Operating Systems |
| 1 | 28993 | 37.56 | 251 | 1.75 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 12800 | 16.58 | 2 | 0.01 | +http://megaindex.com/crawler |
| 3 | 12046 | 15.61 | 1182 | 8.24 | Windows NT |
| 4 | 11811 | 15.30 | 7858 | 54.75 | +http://ahrefs.com/robot/ |
| 5 | 6376 | 8.26 | 3991 | 27.81 | +http://www.baidu.com/search/spider.html |
| 6 | 1962 | 2.54 | 6 | 0.04 | +http://www.warebay.com/bot.html |
| 7 | 849 | 1.10 | 367 | 2.56 | +http://www.google.com/bot.html |
| 8 | 727 | 0.94 | 3 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 9 | 428 | 0.55 | 232 | 1.62 | +http://www.bing.com/bingbot.htm |
| 10 | 374 | 0.48 | 135 | 0.94 | +http://yandex.com/bots |
| 11 | 151 | 0.20 | 137 | 0.95 | +http://www.xovibot.net/ |
| 12 | 150 | 0.19 | 49 | 0.34 | http://www.opensiteexplorer.org/dotbot, ... |
| 13 | 127 | 0.16 | 32 | 0.22 | +http://www.linkdex.com/bots/ |
| 14 | 88 | 0.11 | 24 | 0.17 | http://help.yahoo.com/help/us/ysearch/sl... |
| 15 | 87 | 0.11 | 16 | 0.11 | Windows 95 |
| 16 | 47 | 0.06 | 3 | 0.02 | Windows 98 |
| 17 | 42 | 0.05 | 16 | 0.11 | +http://www.exabot.com/go/robot |
| 18 | 28 | 0.04 | 5 | 0.03 | Windows 2000 |
| 19 | 24 | 0.03 | 4 | 0.03 | Windows 3.1 |
| 20 | 18 | 0.02 | 17 | 0.12 | +http://www.uptime.com/uptimebot |
| 21 | 16 | 0.02 | 4 | 0.03 | Windows XP |
| 22 | 10 | 0.01 | 2 | 0.01 | Windows ME |
| 23 | 6 | 0.01 | 1 | 0.01 | MSIE 5.5; Windows NT 4.0 |
| 24 | 5 | 0.01 | 2 | 0.01 | MSIE 5.5; Windows NT 5.0 |
| 25 | 4 | 0.01 | 4 | 0.03 | http://nmap.org/book/nse.html |
| 26 | 3 | 0.00 | 1 | 0.01 | +info@netcraft.com |
| 27 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 28 | 2 | 0.00 | 2 | 0.01 | Windows Phone OS 7.5 |
| 29 | 2 | 0.00 | 1 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 30 | 1 | 0.00 | 1 | 0.01 | +http://www.privacyaware.org |
| 31 | 1 | 0.00 | 1 | 0.01 | Linux [unknown version] |
| 32 | 1 | 0.00 | 1 | 0.01 | X11 |
| 33 | 1 | 0.00 | 1 | 0.01 | ) - BrowseX (2.0.0 Windows |
| 34 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
| 35 | 1 | 0.00 | 1 | 0.01 | Android 2.3.5 |
