| Used Operating Systems by Visits |
| 1 | 4899 | 21.89 | 1691 | 29.70 | +http://www.baidu.com/search/spider.html |
| 2 | 4977 | 22.24 | 1561 | 27.42 | Windows NT |
| 3 | 3504 | 15.66 | 1286 | 22.59 | +http://www.google.com/bot.html |
| 4 | 1885 | 8.42 | 398 | 6.99 | +http://www.bing.com/bingbot.htm |
| 5 | 3370 | 15.06 | 152 | 2.67 | http://www.majestic12.co.uk/bot.php?+ |
| 6 | 396 | 1.77 | 115 | 2.02 | +http://www.linkdex.com/bots/ |
| 7 | 353 | 1.58 | 85 | 1.49 | +http://ahrefs.com/robot/ |
| 8 | 1485 | 6.64 | 70 | 1.23 | +http://yandex.com/bots |
| 9 | 138 | 0.62 | 69 | 1.21 | +http://www.meanpath.com/meanpathbot.htm... |
| 10 | 312 | 1.39 | 68 | 1.19 | http://www.opensiteexplorer.org/dotbot, ... |
| 11 | 363 | 1.62 | 64 | 1.12 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 110 | 0.49 | 33 | 0.58 | +http://www.exabot.com/go/robot |
| 13 | 72 | 0.32 | 23 | 0.40 | Windows 95 |
| 14 | 7 | 0.03 | 7 | 0.12 | +http://pmoz.info/doc/botinfo.htm |
| 15 | 27 | 0.12 | 7 | 0.12 | Windows 98 |
| 16 | 12 | 0.05 | 6 | 0.11 | http://crawler.sistrix.net/ |
| 17 | 15 | 0.07 | 5 | 0.09 | Windows XP |
| 18 | 15 | 0.07 | 5 | 0.09 | MSIE 5.5; Windows NT 4.0 |
| 19 | 12 | 0.05 | 4 | 0.07 | Windows 2000 |
| 20 | 8 | 0.04 | 4 | 0.07 | +http://OpenLinkProfiler.org/bot |
| 21 | 9 | 0.04 | 3 | 0.05 | Windows ME |
| 22 | 9 | 0.04 | 3 | 0.05 | MSIE 5.5; Windows NT 5.0 |
| 23 | 6 | 0.03 | 2 | 0.04 | Windows CE |
| 24 | 65 | 0.29 | 2 | 0.04 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 25 | 11 | 0.05 | 2 | 0.04 | +http://uni5download.com |
| 26 | 12 | 0.05 | 2 | 0.04 | +http://getdownload.ws |
| 27 | 15 | 0.07 | 2 | 0.04 | Linux [unknown version] |
| 28 | 2 | 0.01 | 2 | 0.04 | +http://www.linkpad.ru |
| 29 | 8 | 0.04 | 2 | 0.04 | +http://help.coccoc.com/ |
| 30 | 6 | 0.03 | 2 | 0.04 | Windows 3.1 |
| 31 | 5 | 0.02 | 2 | 0.04 | +info@netcraft.com |
| 32 | 3 | 0.01 | 2 | 0.04 | +http://www.xovibot.net/ |
| 33 | 4 | 0.02 | 2 | 0.04 | +http://botw.org |
| 34 | 10 | 0.04 | 2 | 0.04 | +http://inload.me |
| 35 | 4 | 0.02 | 2 | 0.04 | +http://fulltext.sblog.cz/ |
| 36 | 3 | 0.01 | 1 | 0.02 | Auto; Windows |
| 37 | 5 | 0.02 | 1 | 0.02 | +https://www.mojeek.com/bot.html |
| 38 | 5 | 0.02 | 1 | 0.02 | +http://onlythegames.com |
| 39 | 17 | 0.08 | 1 | 0.02 | Linux i686 [unknown version] |
| 40 | 3 | 0.01 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 41 | 3 | 0.01 | 1 | 0.02 | ) - BrowseX (2.0.0 Windows |
| 42 | 2 | 0.01 | 1 | 0.02 | X11 |
| 43 | 5 | 0.02 | 1 | 0.02 | +http://dl2engine.net |
| 44 | 4 | 0.02 | 0 | 0.00 | Macintosh PPC |
| 45 | 4 | 0.02 | 0 | 0.00 | +http://www.proximic.com/info/spider.php |
| 46 | 18 | 0.08 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 47 | 22 | 0.10 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 48 | 4 | 0.02 | 0 | 0.00 | +http://siteexplorer.info/ |
| 49 | 3 | 0.01 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 50 | 149 | 0.67 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 51 | 1 | 0.00 | 0 | 0.00 | PPC Mac OS X Mach-O |
