ter Smitten's

As said on nokian900applications, Maemo, the operating system of Nokia N900, has 3 repositories of applications. Repositories are Extras, Extras-Devel, and Extras-Testing and in each are grouped the applications according to their compatibility. In these repositories there are a lot of nice applications (openSSH, Nmap, Evince, Bash), but first we have to enable them. I would recommend not to use the Extra-Devel, but if you necessarily want to you could 👿

To enable, for instance, the Extra repository just click the “Extra” link above and be sure the “Disabled” checkbox is off. For a nice little demo watch this movie:

Or have a look at one of pages below…

References:

• http://maemocentral.com/2009/12/29/how-to-enable-extras-extras-testing-extras-devel-repositories-on-the-n900-with-one-click/
• http://www.nokian900applications.com/repositories-extras-extras-devel-and-extras-testing-for-nokia-n900/
• http://senseapplied.com/index.php/adding-software-repositories-to-n900/