| Used Operating Systems |
| 1 | 1443 | 51.22 | 292 | 45.20 | Windows NT |
| 2 | 376 | 13.35 | 158 | 24.46 | +http://www.google.com/bot.html |
| 3 | 311 | 11.04 | 48 | 7.43 | Intel Mac OS X 10.6 |
| 4 | 292 | 10.37 | 50 | 7.74 | Intel Mac OS X 10.5 |
| 5 | 84 | 2.98 | 29 | 4.49 | http://help.yahoo.com/help/us/ysearch/sl... |
| 6 | 70 | 2.48 | 12 | 1.86 | http://www.dotnetdotcom.org/, crawler@do... |
| 7 | 60 | 2.13 | 16 | 2.48 | http://www.search17.com/bot.php |
| 8 | 55 | 1.95 | 10 | 1.55 | Intel Mac OS X 10.4 |
| 9 | 52 | 1.85 | 2 | 0.31 | +http://www.puritysearch.net/ |
| 10 | 28 | 0.99 | 12 | 1.86 | +http://about.ask.com/en/docs/about/webm... |
| 11 | 18 | 0.64 | 4 | 0.62 | PPC Mac OS X Mach-O |
| 12 | 12 | 0.43 | 2 | 0.31 | PPC Mac OS X 10.4 |
| 13 | 6 | 0.21 | 6 | 0.93 | Linux i686 [unknown version] |
| 14 | 6 | 0.21 | 3 | 0.46 | +http://www.seoprofiler.com/bot/ |
| 15 | 4 | 0.14 | 2 | 0.31 | http://www.majestic12.co.uk/bot.php?+ |
