| Used Operating Systems |
| 1 | 17459 | 53.87 | 1408 | 44.56 | Windows NT |
| 2 | 9161 | 28.27 | 519 | 16.42 | http://help.yahoo.com/help/us/ysearch/sl... |
| 3 | 3772 | 11.64 | 920 | 29.11 | +http://www.baidu.com/search/spider.html |
| 4 | 1061 | 3.27 | 115 | 3.64 | +http://www.google.com/bot.html |
| 5 | 503 | 1.55 | 49 | 1.55 | +http://yandex.com/bots |
| 6 | 99 | 0.31 | 48 | 1.52 | Windows 98 |
| 7 | 82 | 0.25 | 38 | 1.20 | Windows 95 |
| 8 | 77 | 0.24 | 7 | 0.22 | +http://ahrefs.com/robot/ |
| 9 | 26 | 0.08 | 4 | 0.13 | Windows 3.1 |
| 10 | 25 | 0.08 | 12 | 0.38 | MSIE 5.5; Windows NT 5.0 |
| 11 | 25 | 0.08 | 1 | 0.03 | http://www.majestic12.co.uk/bot.php?+ |
| 12 | 18 | 0.06 | 2 | 0.06 | SunOS sun4u |
| 13 | 16 | 0.05 | 8 | 0.25 | Windows CE |
| 14 | 16 | 0.05 | 6 | 0.19 | Windows ME |
| 15 | 14 | 0.04 | 7 | 0.22 | Windows 2000 |
| 16 | 14 | 0.04 | 3 | 0.09 | +http://www.bing.com/bingbot.htm |
| 17 | 12 | 0.04 | 4 | 0.13 | MSIE 5.5; Windows NT 4.0 |
| 18 | 10 | 0.03 | 4 | 0.13 | Windows XP |
| 19 | 8 | 0.02 | 1 | 0.03 | +http://filterdb.iss.net/crawler/ |
| 20 | 4 | 0.01 | 2 | 0.06 | ezooms.bot@gmail.com |
| 21 | 4 | 0.01 | 2 | 0.06 | Linux i686 [unknown version] |
| 22 | 2 | 0.01 | 0 | 0.00 | http://www.youdao.com/help/webmaster/spi... |
