| Used Operating Systems |
| 1 | 42800 | 37.30 | 7503 | 56.04 | +http://ahrefs.com/robot/ |
| 2 | 19514 | 17.01 | 763 | 5.70 | +http://yandex.com/bots |
| 3 | 16553 | 14.43 | 159 | 1.19 | http://mj12bot.com/ |
| 4 | 14881 | 12.97 | 526 | 3.93 | +http://www.bing.com/bingbot.htm |
| 5 | 6642 | 5.79 | 3 | 0.02 | +http://megaindex.com/crawler |
| 6 | 3079 | 2.68 | 821 | 6.13 | Windows NT |
| 7 | 3004 | 2.62 | 3 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 8 | 2579 | 2.25 | 2387 | 17.83 | +http://www.baidu.com/search/spider.html |
| 9 | 2148 | 1.87 | 619 | 4.62 | +http://www.google.com/bot.html |
| 10 | 1329 | 1.16 | 56 | 0.42 | +spider@seoscanners.net |
| 11 | 639 | 0.56 | 8 | 0.06 | http://www.majestic12.co.uk/bot.php?+ |
| 12 | 250 | 0.22 | 1 | 0.01 | Linux [unknown version] |
| 13 | 193 | 0.17 | 14 | 0.10 | +http://napoveda.seznam.cz/en/seznambot-... |
| 14 | 160 | 0.14 | 3 | 0.02 | +http://siteexplorer.info/Backlink-Check... |
| 15 | 135 | 0.12 | 79 | 0.59 | http://help.yahoo.com/help/us/ysearch/sl... |
| 16 | 107 | 0.09 | 83 | 0.62 | Windows 95 |
| 17 | 89 | 0.08 | 46 | 0.34 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 18 | 83 | 0.07 | 24 | 0.18 | Windows 98 |
| 19 | 77 | 0.07 | 20 | 0.15 | +http://www.semrush.com/bot.html |
| 20 | 74 | 0.06 | 66 | 0.49 | +http://www.uptime.com/uptimebot |
| 21 | 59 | 0.05 | 18 | 0.13 | Windows XP |
| 22 | 51 | 0.04 | 20 | 0.15 | +http://www.linkdex.com/bots/ |
| 23 | 37 | 0.03 | 18 | 0.13 | Windows ME |
| 24 | 35 | 0.03 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 25 | 34 | 0.03 | 12 | 0.09 | +http://www.exabot.com/go/robot |
| 26 | 32 | 0.03 | 20 | 0.15 | Windows CE |
| 27 | 23 | 0.02 | 19 | 0.14 | MSIE 5.5; Windows NT 5.0 |
| 28 | 19 | 0.02 | 19 | 0.14 | Auto; Windows |
| 29 | 19 | 0.02 | 14 | 0.10 | Windows 2000 |
| 30 | 18 | 0.02 | 15 | 0.11 | Windows 3.1 |
| 31 | 16 | 0.01 | 8 | 0.06 | +http://help.coccoc.com/searchengine |
| 32 | 15 | 0.01 | 14 | 0.10 | ) - BrowseX (2.0.0 Windows |
| 33 | 15 | 0.01 | 3 | 0.02 | +http://www.profound.net/domainappender |
| 34 | 10 | 0.01 | 10 | 0.07 | MSIE 5.5; Windows NT 4.0 |
| 35 | 7 | 0.01 | 5 | 0.04 | +http://sur.ly/bot.html |
| 36 | 6 | 0.01 | 3 | 0.02 | +http://duckduckgo.com |
| 37 | 4 | 0.00 | 2 | 0.01 | http://www.opensiteexplorer.org/dotbot, ... |
| 38 | 2 | 0.00 | 1 | 0.01 | +info@netcraft.com |
| 39 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
| 40 | 1 | 0.00 | 1 | 0.01 | Macintosh |
| 41 | 1 | 0.00 | 1 | 0.01 | Linux i686 [unknown version] |
