| Used Operating Systems |
| 1 | 1585 | 69.34 | 368 | 70.10 | Windows NT |
| 2 | 327 | 14.30 | 62 | 11.81 | +http://www.google.com/bot.html |
| 3 | 117 | 5.12 | 37 | 7.05 | http://help.yahoo.com/help/us/ysearch/sl... |
| 4 | 76 | 3.32 | 25 | 4.76 | +http://www.scoutjet.com/ |
| 5 | 60 | 2.62 | 2 | 0.38 | Windows NT 5.2 |
| 6 | 34 | 1.49 | 6 | 1.14 | Linux i686 [unknown version] |
| 7 | 32 | 1.40 | 6 | 1.14 | Intel Mac OS X |
| 8 | 22 | 0.96 | 2 | 0.38 | http://www.majestic12.co.uk/bot.php?+ |
| 9 | 18 | 0.79 | 8 | 1.52 | +http://about.ask.com/en/docs/about/webm... |
| 10 | 5 | 0.22 | 1 | 0.19 | Windows 95 |
| 11 | 4 | 0.17 | 2 | 0.38 | http://www.dotnetdotcom.org/, crawler@do... |
| 12 | 4 | 0.17 | 4 | 0.76 | Windows 98 |
| 13 | 2 | 0.09 | 2 | 0.38 | Bluecoat DRTR |
