| Used Operating Systems |
| 1 | 55088 | 83.98 | 1666 | 54.16 | Windows NT |
| 2 | 3520 | 5.37 | 699 | 22.72 | http://help.yahoo.com/help/us/ysearch/sl... |
| 3 | 3144 | 4.79 | 153 | 4.97 | http://www.dotnetdotcom.org/, crawler@do... |
| 4 | 1190 | 1.81 | 311 | 10.11 | +http://www.google.com/bot.html |
| 5 | 800 | 1.22 | 2 | 0.07 | +http://www.puritysearch.net/ |
| 6 | 438 | 0.67 | 14 | 0.46 | Intel Mac OS X 10.6 |
| 7 | 277 | 0.42 | 11 | 0.36 | Intel Mac OS X 10.5 |
| 8 | 259 | 0.39 | 60 | 1.95 | +http://about.ask.com/en/docs/about/webm... |
| 9 | 136 | 0.21 | 8 | 0.26 | http://www.google.com/bot.html |
| 10 | 124 | 0.19 | 18 | 0.59 | Linux i686 [unknown version] |
| 11 | 70 | 0.11 | 10 | 0.33 | +http://www.seoprofiler.com/bot/ |
| 12 | 68 | 0.10 | 2 | 0.07 | Intel Mac OS X 10.4 |
| 13 | 60 | 0.09 | 5 | 0.16 | +http://www.scoutjet.com/ |
| 14 | 53 | 0.08 | 0 | 0.00 | Windows XP |
| 15 | 51 | 0.08 | 30 | 0.98 | +http://www.exabot.com/go/robot |
| 16 | 51 | 0.08 | 1 | 0.03 | Windows NT 5.2 |
| 17 | 50 | 0.08 | 0 | 0.00 | http://desktop.google.com/ |
| 18 | 31 | 0.05 | 16 | 0.52 | http://www.youdao.com/help/webmaster/spi... |
| 19 | 27 | 0.04 | 10 | 0.33 | Windows 98 |
| 20 | 26 | 0.04 | 13 | 0.42 | http://misc.yahoo.com.cn/help.html |
| 21 | 24 | 0.04 | 4 | 0.13 | http://www.majestic12.co.uk/bot.php?+ |
| 22 | 18 | 0.03 | 9 | 0.29 | +http://botw.org |
| 23 | 18 | 0.03 | 7 | 0.23 | http://www.search17.com/bot.php |
| 24 | 17 | 0.03 | 0 | 0.00 | Windows 90 |
| 25 | 16 | 0.02 | 14 | 0.46 | Intel Mac OS X |
| 26 | 12 | 0.02 | 9 | 0.29 | PPC Mac OS X Mach-O |
| 27 | 10 | 0.02 | 0 | 0.00 | Windows 6.0; MSIE 7.0.6001.18000 |
| 28 | 7 | 0.01 | 0 | 0.00 | Windows 6.1; MSIE 8.0.7600.16385 |
| 29 | 4 | 0.01 | 0 | 0.00 | http://developer.yahoo.com/searchmonkey/... |
| 30 | 2 | 0.00 | 2 | 0.07 | Win32 |
| 31 | 2 | 0.00 | 2 | 0.07 | Linux [unknown version] |
