| Used Operating Systems by Visits |
| 1 | 9541 | 16.94 | 5602 | 36.71 | +http://ahrefs.com/robot/ |
| 2 | 7086 | 12.58 | 4652 | 30.49 | +http://www.baidu.com/search/spider.html |
| 3 | 4491 | 7.97 | 643 | 4.21 | Windows NT |
| 4 | 1738 | 3.09 | 526 | 3.45 | +http://www.google.com/bot.html |
| 5 | 401 | 0.71 | 359 | 2.35 | Windows 9 |
| 6 | 393 | 0.70 | 348 | 2.28 | Windows 2008 |
| 7 | 372 | 0.66 | 337 | 2.21 | Windows 2005 |
| 8 | 367 | 0.65 | 334 | 2.19 | Windows 2004 |
| 9 | 369 | 0.66 | 333 | 2.18 | Windows 2006 |
| 10 | 380 | 0.67 | 333 | 2.18 | Windows 2002 |
| 11 | 377 | 0.67 | 332 | 2.18 | Windows 2007 |
| 12 | 363 | 0.64 | 331 | 2.17 | Windows 2003 |
| 13 | 446 | 0.79 | 313 | 2.05 | +http://www.linkdex.com/bots/ |
| 14 | 705 | 1.25 | 256 | 1.68 | +http://www.bing.com/bingbot.htm |
| 15 | 20619 | 36.61 | 193 | 1.26 | http://mj12bot.com/ |
| 16 | 353 | 0.63 | 88 | 0.58 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 17 | 665 | 1.18 | 82 | 0.54 | +http://yandex.com/bots |
| 18 | 7055 | 12.53 | 50 | 0.33 | http://www.majestic12.co.uk/bot.php?+ |
| 19 | 21 | 0.04 | 20 | 0.13 | Windows 95 |
| 20 | 59 | 0.10 | 15 | 0.10 | +http://napoveda.seznam.cz/en/seznambot-... |
| 21 | 35 | 0.06 | 13 | 0.09 | http://help.yahoo.com/help/us/ysearch/sl... |
| 22 | 78 | 0.14 | 11 | 0.07 | +spider@seoscanners.net |
| 23 | 11 | 0.02 | 9 | 0.06 | Windows 98 |
| 24 | 104 | 0.18 | 9 | 0.06 | +http://help.coccoc.com/searchengine |
| 25 | 20 | 0.04 | 8 | 0.05 | +http://duckduckgo.com |
| 26 | 38 | 0.07 | 7 | 0.05 | +http://www.semrush.com/bot.html |
| 27 | 48 | 0.09 | 6 | 0.04 | +http://webmeup-crawler.com/ |
| 28 | 5 | 0.01 | 5 | 0.03 | MSIE 5.5; Windows NT 5.0 |
| 29 | 5 | 0.01 | 5 | 0.03 | ) - BrowseX (2.0.0 Windows |
| 30 | 40 | 0.07 | 4 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 31 | 3 | 0.01 | 3 | 0.02 | Auto; Windows |
| 32 | 6 | 0.01 | 3 | 0.02 | Windows XP |
| 33 | 3 | 0.01 | 3 | 0.02 | Windows ME |
| 34 | 3 | 0.01 | 3 | 0.02 | Windows 3.1 |
| 35 | 27 | 0.05 | 3 | 0.02 | +http://www.seokicks.de/robot.html |
| 36 | 3 | 0.01 | 3 | 0.02 | MSIE 5.5; Windows NT 4.0 |
| 37 | 26 | 0.05 | 2 | 0.01 | +http://siteexplorer.info/Backlink-Check... |
| 38 | 4 | 0.01 | 2 | 0.01 | +info@netcraft.com |
| 39 | 4 | 0.01 | 2 | 0.01 | +http://botw.org |
| 40 | 8 | 0.01 | 2 | 0.01 | +http://www.exabot.com/go/robot |
| 41 | 1 | 0.00 | 1 | 0.01 | Windows CE |
| 42 | 1 | 0.00 | 1 | 0.01 | Windows 2000 |
| 43 | 31 | 0.06 | 1 | 0.01 | +http://filterdb.iss.net/crawler/ |
| 44 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
| 45 | 1 | 0.00 | 1 | 0.01 | +http://pmoz.info/doc/botinfo.htm |
| 46 | 1 | 0.00 | 1 | 0.01 | Linux [unknown version] |
| 47 | 2 | 0.00 | 1 | 0.01 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 48 | 1 | 0.00 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
| 49 | 5 | 0.01 | 1 | 0.01 | +http://www.profound.net/domainappender |
| 50 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
