Medibuntu is a packaging project dedicated to distributing software that cannot be included in Ubuntu for various reasons, related to geographical variations in legislation regarding intellectual property, security and other issues:
patentability of software, algorithms, formats and other abstract creation
legal restrictions on freedom of speech or communication
restrictions on the use of certain types of technical solution, such as cryptography
legal restrictions on imports of software technology, requiring for example specific permissions
etc."
Browse through the lists of packages:
Quick access
To access directly to a package page, use the following shortcut: http://packages.medibuntu.org/release/name.html
For example, to view MPlayer for lucid, go to: http://packages.medibuntu.org/lucid/mplayer.html