| Used Operating Systems |
| 1 | 11155 | 64.02 | 4011 | 82.28 | Windows NT |
| 2 | 3940 | 22.61 | 62 | 1.27 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 528 | 3.03 | 268 | 5.50 | +http://www.bing.com/bingbot.htm |
| 4 | 410 | 2.35 | 184 | 3.77 | +http://www.google.com/bot.html |
| 5 | 365 | 2.09 | 19 | 0.39 | Windows 98 |
| 6 | 141 | 0.81 | 25 | 0.51 | +http://yandex.com/bots |
| 7 | 120 | 0.69 | 47 | 0.96 | +http://www.baidu.com/search/spider.html |
| 8 | 106 | 0.61 | 38 | 0.78 | +http://www.linkdex.com/bots/ |
| 9 | 101 | 0.58 | 5 | 0.10 | http://crawler.sistrix.net/ |
| 10 | 73 | 0.42 | 28 | 0.57 | http://www.opensiteexplorer.org/dotbot, ... |
| 11 | 71 | 0.41 | 29 | 0.59 | help@moz.com |
| 12 | 47 | 0.27 | 15 | 0.31 | X11 |
| 13 | 35 | 0.20 | 1 | 0.02 | +http://www.linkpad.ru |
| 14 | 33 | 0.19 | 11 | 0.23 | +http://www.linkdex.com/about/bots/ |
| 15 | 28 | 0.16 | 10 | 0.21 | Android 2.3.5 |
| 16 | 27 | 0.15 | 12 | 0.25 | +http://www.proximic.com/info/spider.php |
| 17 | 23 | 0.13 | 6 | 0.12 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 18 | 23 | 0.13 | 7 | 0.14 | http://help.yahoo.com/help/us/ysearch/sl... |
| 19 | 22 | 0.13 | 20 | 0.41 | Windows 95 |
| 20 | 19 | 0.11 | 9 | 0.18 | +http://www.grapeshot.co.uk/crawler.php |
| 21 | 18 | 0.10 | 1 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 22 | 18 | 0.10 | 8 | 0.16 | +http://www.exabot.com/go/robot |
| 23 | 17 | 0.10 | 1 | 0.02 | http://www.searchmetrics.com/en/searchme... |
| 24 | 17 | 0.10 | 9 | 0.18 | Linux i686 [unknown version] |
| 25 | 13 | 0.07 | 9 | 0.18 | +http://www.easou.com/search/spider.html |
| 26 | 10 | 0.06 | 4 | 0.08 | Linux [unknown version] |
| 27 | 9 | 0.05 | 5 | 0.10 | MSIE 5.5; Windows NT 4.0 |
| 28 | 8 | 0.05 | 6 | 0.12 | Windows 3.1 |
| 29 | 6 | 0.03 | 3 | 0.06 | +http://fulltext.sblog.cz/ |
| 30 | 5 | 0.03 | 1 | 0.02 | Windows XP |
| 31 | 5 | 0.03 | 5 | 0.10 | MSIE 5.5; Windows NT 5.0 |
| 32 | 3 | 0.02 | 3 | 0.06 | Windows 2000 |
| 33 | 3 | 0.02 | 3 | 0.06 | Windows CE |
| 34 | 3 | 0.02 | 1 | 0.02 | Auto; Windows |
| 35 | 2 | 0.01 | 0 | 0.00 | +http://ahrefs.com/robot/ |
| 36 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 37 | 2 | 0.01 | 2 | 0.04 | Windows ME |
| 38 | 2 | 0.01 | 1 | 0.02 | +http://www.meanpath.com/meanpathbot.htm... |
| 39 | 1 | 0.01 | 1 | 0.02 | rotate |
| 40 | 1 | 0.01 | 0 | 0.00 | http://desktop.google.com/ |
| 41 | 1 | 0.01 | 1 | 0.02 | http://www.lipperhey.com/ |
| 42 | 1 | 0.01 | 1 | 0.02 | +http://www.openindex.io/en/webmasters/s... |
| 43 | 1 | 0.01 | 1 | 0.02 | BeOS BePC |
| 44 | 1 | 0.01 | 0 | 0.00 | Windows 92 |
| 45 | 1 | 0.01 | 0 | 0.00 | +http://www.evri.com/evrinid |
| 46 | 1 | 0.01 | 0 | 0.00 | Intel Mac OS X 10.6 |
| 47 | 1 | 0.01 | 0 | 0.00 | +http://about.ask.com/en/docs/about/webm... |
| 48 | 1 | 0.01 | 0 | 0.00 | +http://ego.ms.mff.cuni.cz/ |
| 49 | 1 | 0.01 | 1 | 0.02 | +http://wmaid.com/explore/ |
| 50 | 1 | 0.01 | 1 | 0.02 | +info@netcraft.com |
| 51 | 1 | 0.01 | 0 | 0.00 | http://nlp.fi.muni.cz/projects/biwec/ |
