Medibuntu has been discontinued. Similar apps include Ubuntu Restricted Extras, which is free. Other options are GetDeb, Appnr and Dotdeb.org. In total there are four Package Managers like Medibuntu for Linux and the web.
Ubuntu's commitment to only include completely free software by default means that proprietary media formats are not configured 'out of the box'. However, you can install the ability to play popular non-free media formats, including DVD, MP3, Quicktime, and Windows...
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GetDeb extends the existing software options for Ubuntu (and derived) Linux distributions by providing major updates and software not yet available on the official Ubuntu repositories.
Appnr is a web-based package browser that install applications on Ubuntu. This is a web interface for APT system, and the package is downloaded and installed from Ubuntu/Third-party repositories.
Dotdeb is a repository containing packages to turn your Debian boxes into powerful, stable and up-to-date LAMP servers : PHP 5.4 and 5.3, useful PHP extensions : APC, imagick, Pinba, xcache, Xdebug, Hprof, MySQL 5.5, Percona toolkit, Nginx, Passenger, Redis, and more.
