| Used Operating Systems |
| 1 | 52879 | 36.74 | 601 | 4.84 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 49242 | 34.22 | 2 | 0.02 | +http://megaindex.com/crawler |
| 3 | 12154 | 8.45 | 7312 | 58.93 | +http://ahrefs.com/robot/ |
| 4 | 6969 | 4.84 | 314 | 2.53 | +http://www.bing.com/bingbot.htm |
| 5 | 5121 | 3.56 | 744 | 6.00 | Windows NT |
| 6 | 5000 | 3.47 | 12 | 0.10 | +http://www.warebay.com/bot.html |
| 7 | 4908 | 3.41 | 2471 | 19.92 | +http://www.baidu.com/search/spider.html |
| 8 | 2214 | 1.54 | 7 | 0.06 | +http://OpenLinkProfiler.org/bot |
| 9 | 1072 | 0.74 | 231 | 1.86 | +http://www.linkdex.com/bots/ |
| 10 | 1003 | 0.70 | 1 | 0.01 | http://crawler.007ac9.net/ |
| 11 | 618 | 0.43 | 34 | 0.27 | http://www.opensiteexplorer.org/dotbot, ... |
| 12 | 610 | 0.42 | 99 | 0.80 | http://help.yahoo.com/help/us/ysearch/sl... |
| 13 | 443 | 0.31 | 128 | 1.03 | +http://yandex.com/bots |
| 14 | 426 | 0.30 | 95 | 0.77 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 15 | 328 | 0.23 | 135 | 1.09 | +http://www.google.com/bot.html |
| 16 | 118 | 0.08 | 26 | 0.21 | Windows 95 |
| 17 | 105 | 0.07 | 0 | 0.00 | +http://fulltext.sblog.cz/ |
| 18 | 93 | 0.06 | 1 | 0.01 | +http://www.linkpad.ru |
| 19 | 87 | 0.06 | 27 | 0.22 | +http://www.exabot.com/go/robot |
| 20 | 86 | 0.06 | 72 | 0.58 | +http://www.uptime.com/uptimebot |
| 21 | 80 | 0.06 | 13 | 0.10 | Windows 98 |
| 22 | 52 | 0.04 | 14 | 0.11 | +http://help.coccoc.com/ |
| 23 | 36 | 0.03 | 8 | 0.06 | MSIE 5.5; Windows NT 5.0 |
| 24 | 36 | 0.03 | 4 | 0.03 | Windows 3.1 |
| 25 | 30 | 0.02 | 8 | 0.06 | Windows ME |
| 26 | 28 | 0.02 | 0 | 0.00 | +http://glutenfreepleasure.com/ |
| 27 | 25 | 0.02 | 5 | 0.04 | Windows CE |
| 28 | 24 | 0.02 | 2 | 0.02 | +https://www.lipperhey.com/en/about/ |
| 29 | 18 | 0.01 | 2 | 0.02 | +http://filterdb.iss.net/crawler/ |
| 30 | 18 | 0.01 | 13 | 0.10 | Windows XP |
| 31 | 15 | 0.01 | 6 | 0.05 | MSIE 5.5; Windows NT 4.0 |
| 32 | 13 | 0.01 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 33 | 9 | 0.01 | 5 | 0.04 | +http://sur.ly/bot.html |
| 34 | 8 | 0.01 | 0 | 0.00 | +http://siteexplorer.info/ |
| 35 | 6 | 0.00 | 0 | 0.00 | Macintosh PPC |
| 36 | 6 | 0.00 | 0 | 0.00 | Linux 2.4.x |
| 37 | 6 | 0.00 | 2 | 0.02 | +http://www.privacyaware.org |
| 38 | 6 | 0.00 | 0 | 0.00 | http://yooz.ir; info@yooz.ir |
| 39 | 5 | 0.00 | 5 | 0.04 | Windows 2000 |
| 40 | 4 | 0.00 | 2 | 0.02 | MSIE 6.0; Windows NT 5.1 |
| 41 | 4 | 0.00 | 4 | 0.03 | +info@netcraft.com |
| 42 | 4 | 0.00 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 43 | 2 | 0.00 | 0 | 0.00 | Macintosh; Intel Mac OS X 10_7_3; Triden... |
| 44 | 2 | 0.00 | 0 | 0.00 | +https://deusu.de/robot.html |
| 45 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 46 | 2 | 0.00 | 1 | 0.01 | X11 |
| 47 | 2 | 0.00 | 1 | 0.01 | Android 2.3.5 |
