| Used Operating Systems |
| 1 | 26791 | 43.05 | 309 | 3.50 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 8917 | 14.33 | 1420 | 16.09 | Windows NT |
| 3 | 6581 | 10.58 | 1 | 0.01 | +http://megaindex.com/crawler |
| 4 | 6442 | 10.35 | 3216 | 36.45 | +http://ahrefs.com/robot/ |
| 5 | 3726 | 5.99 | 7 | 0.08 | +http://OpenLinkProfiler.org/bot |
| 6 | 2343 | 3.77 | 1969 | 22.31 | +http://www.baidu.com/search/spider.html |
| 7 | 2044 | 3.28 | 422 | 4.78 | +http://www.bing.com/bingbot.htm |
| 8 | 1312 | 2.11 | 240 | 2.72 | +http://yandex.com/bots |
| 9 | 1094 | 1.76 | 7 | 0.08 | +http://webmeup-crawler.com/ |
| 10 | 899 | 1.44 | 423 | 4.79 | +http://www.google.com/bot.html |
| 11 | 500 | 0.80 | 112 | 1.27 | +http://www.linkdex.com/bots/ |
| 12 | 355 | 0.57 | 35 | 0.40 | +http://napoveda.seznam.cz/en/seznambot-... |
| 13 | 310 | 0.50 | 120 | 1.36 | http://help.yahoo.com/help/us/ysearch/sl... |
| 14 | 212 | 0.34 | 109 | 1.24 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 15 | 96 | 0.15 | 79 | 0.90 | Windows 95 |
| 16 | 87 | 0.14 | 81 | 0.92 | +http://www.xovibot.net/ |
| 17 | 76 | 0.12 | 32 | 0.36 | Windows 98 |
| 18 | 64 | 0.10 | 20 | 0.23 | Windows XP |
| 19 | 48 | 0.08 | 6 | 0.07 | +http://www.seokicks.de/robot.html |
| 20 | 39 | 0.06 | 36 | 0.41 | +http://www.uptime.com/uptimebot |
| 21 | 28 | 0.04 | 14 | 0.16 | +http://duckduckgo.com |
| 22 | 27 | 0.04 | 20 | 0.23 | Windows CE |
| 23 | 27 | 0.04 | 18 | 0.20 | MSIE 5.5; Windows NT 5.0 |
| 24 | 25 | 0.04 | 20 | 0.23 | Windows 2000 |
| 25 | 23 | 0.04 | 13 | 0.15 | +http://www.semrush.com/bot.html |
| 26 | 22 | 0.04 | 4 | 0.05 | Intel Mac OS X 10_7_4 |
| 27 | 22 | 0.04 | 10 | 0.11 | +http://www.exabot.com/go/robot |
| 28 | 20 | 0.03 | 18 | 0.20 | ) - BrowseX (2.0.0 Windows |
| 29 | 18 | 0.03 | 11 | 0.12 | Windows 3.1 |
| 30 | 16 | 0.03 | 15 | 0.17 | Windows ME |
| 31 | 14 | 0.02 | 12 | 0.14 | MSIE 5.5; Windows NT 4.0 |
| 32 | 10 | 0.02 | 7 | 0.08 | X11 |
| 33 | 9 | 0.01 | 7 | 0.08 | Auto; Windows |
| 34 | 9 | 0.01 | 1 | 0.01 | +https://www.dataprovider.com/ |
| 35 | 5 | 0.01 | 2 | 0.02 | +http://sur.ly/bot.html |
| 36 | 4 | 0.01 | 2 | 0.02 | http://www.botje.com/plukkie.htm |
| 37 | 3 | 0.00 | 3 | 0.03 | Linux i686 [unknown version] |
| 38 | 3 | 0.00 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 39 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 40 | 2 | 0.00 | 1 | 0.01 | +info@netcraft.com |
| 41 | 1 | 0.00 | 1 | 0.01 | http://nmap.org/book/nse.html |
| 42 | 1 | 0.00 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
