| Used Operating Systems |
| 1 | 21797 | 42.38 | 273 | 3.31 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 18453 | 35.87 | 4941 | 59.94 | Windows NT |
| 3 | 2719 | 5.29 | 1185 | 14.38 | +http://www.baidu.com/search/spider.html |
| 4 | 2375 | 4.62 | 638 | 7.74 | +http://www.google.com/bot.html |
| 5 | 1544 | 3.00 | 251 | 3.05 | +http://yandex.com/bots |
| 6 | 1366 | 2.66 | 4 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 7 | 1336 | 2.60 | 232 | 2.81 | http://www.opensiteexplorer.org/dotbot, ... |
| 8 | 891 | 1.73 | 374 | 4.54 | +http://www.easou.com/search/spider.html |
| 9 | 449 | 0.87 | 126 | 1.53 | +http://www.linkdex.com/bots/ |
| 10 | 322 | 0.63 | 88 | 1.07 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 43 | 0.08 | 39 | 0.47 | Linux i686 [unknown version] |
| 12 | 28 | 0.05 | 23 | 0.28 | Windows 98 |
| 13 | 23 | 0.04 | 9 | 0.11 | +http://www.bing.com/bingbot.htm |
| 14 | 19 | 0.04 | 17 | 0.21 | Linux [unknown version] |
| 15 | 18 | 0.03 | 18 | 0.22 | X11 |
| 16 | 16 | 0.03 | 8 | 0.10 | Windows 95 |
| 17 | 14 | 0.03 | 11 | 0.13 | J2ME/MIDP |
| 18 | 10 | 0.02 | 0 | 0.00 | +http://ahrefs.com/robot/ |
| 19 | 6 | 0.01 | 2 | 0.02 | +http://siteexplorer.info/ |
| 20 | 4 | 0.01 | 2 | 0.02 | Windows 2000 |
| 21 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 22 | 2 | 0.00 | 2 | 0.02 | +info@netcraft.com |
