| Used Operating Systems by Visits |
| 1 | 2962 | 21.02 | 1500 | 40.60 | +http://www.baidu.com/search/spider.html |
| 2 | 4036 | 28.64 | 967 | 26.17 | Windows NT |
| 3 | 2041 | 14.48 | 473 | 12.80 | +http://www.bing.com/bingbot.htm |
| 4 | 1475 | 10.47 | 341 | 9.23 | +http://www.google.com/bot.html |
| 5 | 168 | 1.19 | 77 | 2.08 | http://www.opensiteexplorer.org/dotbot, ... |
| 6 | 275 | 1.95 | 60 | 1.62 | +http://www.linkdex.com/bots/ |
| 7 | 288 | 2.04 | 55 | 1.49 | http://help.yahoo.com/help/us/ysearch/sl... |
| 8 | 198 | 1.41 | 42 | 1.14 | +http://yandex.com/bots |
| 9 | 1932 | 13.71 | 28 | 0.76 | http://www.majestic12.co.uk/bot.php?+ |
| 10 | 37 | 0.26 | 23 | 0.62 | Windows 95 |
| 11 | 57 | 0.40 | 19 | 0.51 | Windows XP |
| 12 | 40 | 0.28 | 15 | 0.41 | Windows 98 |
| 13 | 106 | 0.75 | 9 | 0.24 | +http://ahrefs.com/robot/ |
| 14 | 29 | 0.21 | 9 | 0.24 | +http://help.coccoc.com/ |
| 15 | 23 | 0.16 | 8 | 0.22 | +http://www.exabot.com/go/robot |
| 16 | 13 | 0.09 | 6 | 0.16 | AyeAyeBot |
| 17 | 5 | 0.04 | 5 | 0.14 | +http://www.parsijoo.ir/; crawler@parsij... |
| 18 | 8 | 0.06 | 4 | 0.11 | Windows 2000 |
| 19 | 4 | 0.03 | 4 | 0.11 | +http://pmoz.info/doc/botinfo.htm |
| 20 | 5 | 0.04 | 4 | 0.11 | Windows ME |
| 21 | 10 | 0.07 | 4 | 0.11 | MSIE 5.5; Windows NT 4.0 |
| 22 | 8 | 0.06 | 4 | 0.11 | +http://duckduckgo.com |
| 23 | 6 | 0.04 | 3 | 0.08 | Windows CE |
| 24 | 8 | 0.06 | 3 | 0.08 | MSIE 5.5; Windows NT 5.0 |
| 25 | 3 | 0.02 | 3 | 0.08 | Windows 3.1 |
| 26 | 228 | 1.62 | 2 | 0.05 | +http://www.warebay.com/bot.html |
| 27 | 3 | 0.02 | 2 | 0.05 | http://nmap.org/book/nse.html |
| 28 | 3 | 0.02 | 2 | 0.05 | Linux [unknown version] |
| 29 | 6 | 0.04 | 2 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 30 | 4 | 0.03 | 2 | 0.05 | http://www.botje.com/plukkie.htm |
| 31 | 7 | 0.05 | 2 | 0.05 | Linux i686 [unknown version] |
| 32 | 5 | 0.04 | 2 | 0.05 | +info@netcraft.com |
| 33 | 6 | 0.04 | 2 | 0.05 | +http://www.profound.net/domainappender |
| 34 | 4 | 0.03 | 2 | 0.05 | +http://www.meanpath.com/meanpathbot.htm... |
| 35 | 1 | 0.01 | 1 | 0.03 | Auto; Windows |
| 36 | 21 | 0.15 | 1 | 0.03 | +http://filterdb.iss.net/crawler/ |
| 37 | 2 | 0.01 | 1 | 0.03 | +http://crawler.seolytics.net/ |
| 38 | 1 | 0.01 | 1 | 0.03 | FreeBSD [unknown version] |
| 39 | 3 | 0.02 | 1 | 0.03 | +https://www.lipperhey.com/en/about/ |
| 40 | 9 | 0.06 | 1 | 0.03 | +http://www.semrush.com/bot.html |
| 41 | 1 | 0.01 | 1 | 0.03 | +http://megaindex.com/crawler |
| 42 | 1 | 0.01 | 1 | 0.03 | ) - BrowseX (2.0.0 Windows |
| 43 | 1 | 0.01 | 1 | 0.03 | X11 |
| 44 | 7 | 0.05 | 1 | 0.03 | MAUI Runtime |
| 45 | 13 | 0.09 | 1 | 0.03 | +http://fulltext.sblog.cz/ |
| 46 | 8 | 0.06 | 0 | 0.00 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 47 | 1 | 0.01 | 0 | 0.00 | apps-presentations; +http://docs.google.... |
| 48 | 17 | 0.12 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 49 | 2 | 0.01 | 0 | 0.00 | +http://www.findxbot.com |
