| Used Operating Systems |
| 1 | 5670 | 47.27 | 2260 | 51.49 | Windows NT |
| 2 | 1953 | 16.28 | 145 | 3.30 | http://www.opensiteexplorer.org/dotbot, ... |
| 3 | 1689 | 14.08 | 1570 | 35.77 | +http://www.baidu.com/search/spider.html |
| 4 | 723 | 6.03 | 8 | 0.18 | +http://www.easou.com/search/spider.html |
| 5 | 707 | 5.89 | 210 | 4.78 | +http://www.google.com/bot.html |
| 6 | 329 | 2.74 | 62 | 1.41 | +http://www.bing.com/bingbot.htm |
| 7 | 208 | 1.73 | 30 | 0.68 | +http://yandex.com/bots |
| 8 | 119 | 0.99 | 1 | 0.02 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 81 | 0.68 | 2 | 0.05 | +http://fulltext.sblog.cz/ |
| 10 | 74 | 0.62 | 11 | 0.25 | +http://ahrefs.com/robot/ |
| 11 | 61 | 0.51 | 9 | 0.21 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 45 | 0.38 | 6 | 0.14 | Windows 95 |
| 13 | 38 | 0.32 | 7 | 0.16 | http://www.majestic12.co.uk/bot.php?+ |
| 14 | 27 | 0.23 | 3 | 0.07 | Windows 98 |
| 15 | 20 | 0.17 | 10 | 0.23 | +http://www.meanpath.com/meanpathbot.htm... |
| 16 | 19 | 0.16 | 7 | 0.16 | +http://www.semrush.com/bot.html |
| 17 | 19 | 0.16 | 3 | 0.07 | +http://www.exabot.com/go/robot |
| 18 | 18 | 0.15 | 0 | 0.00 | Windows CE |
| 19 | 16 | 0.13 | 1 | 0.02 | Linux [unknown version] |
| 20 | 15 | 0.13 | 2 | 0.05 | Windows XP |
| 21 | 13 | 0.11 | 1 | 0.02 | Auto; Windows |
| 22 | 13 | 0.11 | 2 | 0.05 | X11 |
| 23 | 12 | 0.10 | 4 | 0.09 | +; |
| 24 | 9 | 0.08 | 0 | 0.00 | Windows 3.1 |
| 25 | 8 | 0.07 | 2 | 0.05 | Windows ME |
| 26 | 8 | 0.07 | 2 | 0.05 | MSIE 5.5; Windows NT 5.0 |
| 27 | 8 | 0.07 | 3 | 0.07 | Android 2.3.5 |
| 28 | 7 | 0.06 | 1 | 0.02 | ) - BrowseX (2.0.0 Windows |
| 29 | 7 | 0.06 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 30 | 6 | 0.05 | 1 | 0.02 | http://nmap.org/book/nse.html |
| 31 | 6 | 0.05 | 1 | 0.02 | +http://www.xovibot.net/ |
| 32 | 5 | 0.04 | 1 | 0.02 | J2ME/MIDP |
| 33 | 5 | 0.04 | 1 | 0.02 | Android |
| 34 | 5 | 0.04 | 5 | 0.11 | +http://domainsigma.com/robot |
| 35 | 4 | 0.03 | 1 | 0.02 | +http://downloadmine.biz |
| 36 | 4 | 0.03 | 1 | 0.02 | +http://prox100download.com |
| 37 | 4 | 0.03 | 1 | 0.02 | +http://u2search.co |
| 38 | 4 | 0.03 | 1 | 0.02 | +http://plus5files.net |
| 39 | 4 | 0.03 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 40 | 4 | 0.03 | 1 | 0.02 | +http://r4downloads.co |
| 41 | 3 | 0.03 | 1 | 0.02 | http://www.lipperhey.com/ |
| 42 | 3 | 0.03 | 0 | 0.00 | Windows 2000 |
| 43 | 3 | 0.03 | 3 | 0.07 | +http://fb02itsscan.fh-muenster.de |
| 44 | 3 | 0.03 | 1 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 45 | 3 | 0.03 | 0 | 0.00 | MSIE 5.5; Windows NT 4.0 |
| 46 | 2 | 0.02 | 2 | 0.05 | crawler@mixrank.com |
| 47 | 2 | 0.02 | 1 | 0.02 | http://crawler.sistrix.net/ |
| 48 | 2 | 0.02 | 1 | 0.02 | ScoutJet; +http://blekko.com/about/blekk... |
| 49 | 2 | 0.02 | 0 | 0.00 | +http://siteexplorer.info/ |
| 50 | 2 | 0.02 | 2 | 0.05 | +http://wmaid.com/en/explore/ |
| 51 | 2 | 0.02 | 1 | 0.02 | +info@netcraft.com |
