| Used Operating Systems |
| 1 | 52421 | 49.13 | 437 | 4.23 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 18376 | 17.22 | 6593 | 63.76 | +http://ahrefs.com/robot/ |
| 3 | 12643 | 11.85 | 958 | 9.26 | Windows NT |
| 4 | 11074 | 10.38 | 1712 | 16.56 | +http://www.baidu.com/search/spider.html |
| 5 | 6578 | 6.16 | 2 | 0.02 | +http://megaindex.com/crawler |
| 6 | 2621 | 2.46 | 7 | 0.07 | +http://OpenLinkProfiler.org/bot |
| 7 | 649 | 0.61 | 139 | 1.34 | +http://www.linkdex.com/bots/ |
| 8 | 500 | 0.47 | 2 | 0.02 | Linux [unknown version] |
| 9 | 492 | 0.46 | 4 | 0.04 | +http://webmeup-crawler.com/ |
| 10 | 297 | 0.28 | 92 | 0.89 | +http://yandex.com/bots |
| 11 | 283 | 0.27 | 101 | 0.98 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 234 | 0.22 | 114 | 1.10 | +http://www.google.com/bot.html |
| 13 | 148 | 0.14 | 33 | 0.32 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 14 | 146 | 0.14 | 67 | 0.65 | +http://www.bing.com/bingbot.htm |
| 15 | 56 | 0.05 | 10 | 0.10 | Windows 95 |
| 16 | 30 | 0.03 | 27 | 0.26 | +http://www.uptime.com/uptimebot |
| 17 | 24 | 0.02 | 2 | 0.02 | +https://www.lipperhey.com/en/about/ |
| 18 | 24 | 0.02 | 11 | 0.11 | +http://www.exabot.com/go/robot |
| 19 | 18 | 0.02 | 0 | 0.00 | MSIE 5.5; Windows NT 5.1 |
| 20 | 10 | 0.01 | 2 | 0.02 | BlackBerry |
| 21 | 10 | 0.01 | 2 | 0.02 | Android |
| 22 | 10 | 0.01 | 7 | 0.07 | Windows XP |
| 23 | 9 | 0.01 | 1 | 0.01 | +http://filterdb.iss.net/crawler/ |
| 24 | 8 | 0.01 | 2 | 0.02 | Windows ME |
| 25 | 8 | 0.01 | 8 | 0.08 | +http://www.xovibot.net/ |
| 26 | 6 | 0.01 | 0 | 0.00 | Windows 98 |
| 27 | 4 | 0.00 | 1 | 0.01 | Windows CE |
| 28 | 4 | 0.00 | 1 | 0.01 | Windows 3.1 |
| 29 | 4 | 0.00 | 0 | 0.00 | +http://www.semrush.com/bot.html |
| 30 | 4 | 0.00 | 2 | 0.02 | +http://www.findxbot.com |
| 31 | 4 | 0.00 | 0 | 0.00 | Intel Mac OS X 10.6 |
| 32 | 4 | 0.00 | 2 | 0.02 | +http://www.meanpath.com/meanpathbot.htm... |
| 33 | 2 | 0.00 | 2 | 0.02 | +info@netcraft.com |
