Getdeb -- Extra Software for Ubuntu Linux

Making the latest versions of software available for the current Ubuntu versions.

The current Ubuntu official packages update policy is limited to critical bug fixes. This policy implies that emerging applications are not available in the current already released and supported Ubuntu versions.

The getdeb project wants to overcome this limitation
Note: The GetDeb team may not follow the Debian/Ubuntu packagning guidelines meaning you should not expect the same level of quality control as you get from those. On the other hand you will be able to get usefull packages that will hardly get into Debian/Ubuntu due to policy constraints.
Getdeb - Wikipedia, the free encyclopedia
GetDeb - Software Portal for Ubuntu « Linux and Open Source Blog
Howto: Access GetDeb.net packages through Apt-get/Synaptic « Xubuntu Blog