| Used Operating Systems |
| 1 | 16058 | 44.14 | 6040 | 73.11 | +http://ahrefs.com/robot/ |
| 2 | 8621 | 23.70 | 99 | 1.20 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 6483 | 17.82 | 97 | 1.17 | http://mj12bot.com/ |
| 4 | 1665 | 4.58 | 866 | 10.48 | +http://www.baidu.com/search/spider.html |
| 5 | 1464 | 4.02 | 518 | 6.27 | Windows NT |
| 6 | 553 | 1.52 | 262 | 3.17 | +http://www.google.com/bot.html |
| 7 | 447 | 1.23 | 107 | 1.30 | +http://www.linkdex.com/bots/ |
| 8 | 307 | 0.84 | 129 | 1.56 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 251 | 0.69 | 2 | 0.02 | Linux i686 [unknown version] |
| 10 | 219 | 0.60 | 47 | 0.57 | +http://www.bing.com/bingbot.htm |
| 11 | 211 | 0.58 | 58 | 0.70 | +http://yandex.com/bots |
| 12 | 54 | 0.15 | 1 | 0.01 | +http://www.semrush.com/bot.html |
| 13 | 16 | 0.04 | 16 | 0.19 | Windows 98 |
| 14 | 15 | 0.04 | 8 | 0.10 | Windows 95 |
| 15 | 6 | 0.02 | 3 | 0.04 | Windows ME |
| 16 | 3 | 0.01 | 2 | 0.02 | Windows CE |
| 17 | 2 | 0.01 | 2 | 0.02 | Windows XP |
| 18 | 2 | 0.01 | 2 | 0.02 | Windows 3.1 |
| 19 | 1 | 0.00 | 1 | 0.01 | Windows 2000 |
| 20 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 21 | 1 | 0.00 | 1 | 0.01 | +info@netcraft.com |
