| Used Operating Systems |
| 1 | 20574 | 35.16 | 491 | 7.16 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 12616 | 21.56 | 410 | 5.98 | Windows NT |
| 3 | 6542 | 11.18 | 2 | 0.03 | +http://megaindex.com/crawler |
| 4 | 4063 | 6.94 | 2648 | 38.61 | +http://ahrefs.com/robot/ |
| 5 | 3890 | 6.65 | 275 | 4.01 | http://www.opensiteexplorer.org/dotbot, ... |
| 6 | 3605 | 6.16 | 1726 | 25.17 | +http://www.baidu.com/search/spider.html |
| 7 | 1640 | 2.80 | 155 | 2.26 | +http://yandex.com/bots |
| 8 | 1279 | 2.19 | 369 | 5.38 | +http://www.linkdex.com/bots/ |
| 9 | 974 | 1.66 | 5 | 0.07 | +http://OpenLinkProfiler.org/bot |
| 10 | 903 | 1.54 | 484 | 7.06 | +http://www.google.com/bot.html |
| 11 | 520 | 0.89 | 4 | 0.06 | +http://www.warebay.com/bot.html |
| 12 | 438 | 0.75 | 8 | 0.12 | +http://siteexplorer.info/ |
| 13 | 296 | 0.51 | 114 | 1.66 | http://help.yahoo.com/help/us/ysearch/sl... |
| 14 | 222 | 0.38 | 22 | 0.32 | +http://www.semrush.com/bot.html |
| 15 | 173 | 0.30 | 22 | 0.32 | +http://www.bing.com/bingbot.htm |
| 16 | 161 | 0.28 | 17 | 0.25 | Windows 95 |
| 17 | 85 | 0.15 | 5 | 0.07 | Windows 3.1 |
| 18 | 77 | 0.13 | 10 | 0.15 | Windows 98 |
| 19 | 69 | 0.12 | 5 | 0.07 | MSIE 5.5; Windows NT 4.0 |
| 20 | 68 | 0.12 | 4 | 0.06 | Windows ME |
| 21 | 64 | 0.11 | 26 | 0.38 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 22 | 56 | 0.10 | 15 | 0.22 | +http://www.exabot.com/go/robot |
| 23 | 54 | 0.09 | 6 | 0.09 | +http://www.seokicks.de/robot.html |
| 24 | 35 | 0.06 | 3 | 0.04 | MSIE 5.5; Windows NT 5.0 |
| 25 | 34 | 0.06 | 2 | 0.03 | +https://www.dataprovider.com/ |
| 26 | 17 | 0.03 | 1 | 0.01 | Windows 2000 |
| 27 | 11 | 0.02 | 0 | 0.00 | Windows 9x |
| 28 | 8 | 0.01 | 2 | 0.03 | +https://www.mojeek.com/bot.html |
| 29 | 8 | 0.01 | 8 | 0.12 | +http://www.xovibot.net/ |
| 30 | 6 | 0.01 | 6 | 0.09 | +http://sur.ly/bot.html |
| 31 | 6 | 0.01 | 5 | 0.07 | Windows XP |
| 32 | 6 | 0.01 | 2 | 0.03 | +http://webmeup-crawler.com/ |
| 33 | 3 | 0.01 | 3 | 0.04 | ) - BrowseX (2.0.0 Windows |
| 34 | 3 | 0.01 | 1 | 0.01 | WinHttp.WinHttpRequest.5 |
| 35 | 2 | 0.00 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 36 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 37 | 2 | 0.00 | 0 | 0.00 | +http://www.uptime.com/uptimebot |
| 38 | 2 | 0.00 | 2 | 0.03 | +info@netcraft.com |
