| Used Operating Systems |
| 1 | 20883 | 65.96 | 310 | 6.50 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 3692 | 11.66 | 824 | 17.28 | Windows NT |
| 3 | 2882 | 9.10 | 2312 | 48.48 | +http://www.baidu.com/search/spider.html |
| 4 | 1527 | 4.82 | 530 | 11.11 | +http://www.bing.com/bingbot.htm |
| 5 | 891 | 2.81 | 180 | 3.77 | +http://www.google.com/bot.html |
| 6 | 372 | 1.18 | 4 | 0.08 | +http://napoveda.seznam.cz/en/seznambot-... |
| 7 | 200 | 0.63 | 82 | 1.72 | http://www.opensiteexplorer.org/dotbot, ... |
| 8 | 137 | 0.43 | 46 | 0.96 | +http://www.linkdex.com/bots/ |
| 9 | 126 | 0.40 | 59 | 1.24 | +http://yandex.com/bots |
| 10 | 114 | 0.36 | 82 | 1.72 | Windows 95 |
| 11 | 84 | 0.27 | 19 | 0.40 | Windows 98 |
| 12 | 72 | 0.23 | 8 | 0.17 | +http://www.seokicks.de/robot.html |
| 13 | 65 | 0.21 | 62 | 1.30 | +http://www.uptime.com/uptimebot |
| 14 | 54 | 0.17 | 6 | 0.13 | +http://OpenLinkProfiler.org/bot |
| 15 | 50 | 0.16 | 16 | 0.34 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 16 | 44 | 0.14 | 3 | 0.06 | +http://fulltext.sblog.cz/ |
| 17 | 42 | 0.13 | 22 | 0.46 | +http://ahrefs.com/robot/ |
| 18 | 39 | 0.12 | 13 | 0.27 | Windows XP |
| 19 | 33 | 0.10 | 5 | 0.10 | +http://webmeup-crawler.com/ |
| 20 | 30 | 0.09 | 19 | 0.40 | Windows 3.1 |
| 21 | 30 | 0.09 | 20 | 0.42 | MSIE 5.5; Windows NT 4.0 |
| 22 | 26 | 0.08 | 20 | 0.42 | Auto; Windows |
| 23 | 26 | 0.08 | 14 | 0.29 | +http://www.semrush.com/bot.html |
| 24 | 24 | 0.08 | 18 | 0.38 | Windows CE |
| 25 | 24 | 0.08 | 11 | 0.23 | http://help.yahoo.com/help/us/ysearch/sl... |
| 26 | 21 | 0.07 | 16 | 0.34 | ) - BrowseX (2.0.0 Windows |
| 27 | 20 | 0.06 | 14 | 0.29 | Windows 2000 |
| 28 | 18 | 0.06 | 2 | 0.04 | +http://www.warebay.com/bot.html |
| 29 | 18 | 0.06 | 2 | 0.04 | http://crawler.007ac9.net/ |
| 30 | 18 | 0.06 | 2 | 0.04 | +https://www.dataprovider.com/ |
| 31 | 16 | 0.05 | 11 | 0.23 | Windows ME |
| 32 | 16 | 0.05 | 14 | 0.29 | MSIE 5.5; Windows NT 5.0 |
| 33 | 16 | 0.05 | 2 | 0.04 | +http://megaindex.com/crawler |
| 34 | 12 | 0.04 | 5 | 0.10 | +https://www.mojeek.com/bot.html |
| 35 | 10 | 0.03 | 4 | 0.08 | +http://www.exabot.com/go/robot |
| 36 | 8 | 0.03 | 4 | 0.08 | +http://duckduckgo.com |
| 37 | 4 | 0.01 | 2 | 0.04 | http://www.botje.com/plukkie.htm |
| 38 | 4 | 0.01 | 2 | 0.04 | +info@netcraft.com |
| 39 | 4 | 0.01 | 0 | 0.00 | +http://siteexplorer.info/ |
| 40 | 2 | 0.01 | 2 | 0.04 | http://nmap.org/book/nse.html |
| 41 | 2 | 0.01 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 42 | 2 | 0.01 | 2 | 0.04 | +http://www.grapeshot.co.uk/crawler.php |
