Many software and updates are not available from Ubuntu repositories which makes it hard to find alternative third-party repositories to download software and updates.
Bleeding Edge is an open source shell script for 32-bit and 64-bit Ubuntu versions which allows easily installing software, repositories and keys. It contains many software which you are unlikely to find in the Ubuntu repository. The available software and packages include Getdeb, Adobe Acrobat Reader, Java, Dropbox, Hulu Flash Required, Dolphin Wii Emulator, Google Picasa, Media Players, Codecs, MS Fonts and much more. Bleeding Edge packages are available for Ubuntu 10.04, Ubuntu 10.10 and Ubuntu 11.04.
Download the .sh file from the download link given at the end of this post, select file properties from right click menu. From the Permissions tab, check “Allow executing file as program” option.
After that, double click to execute the file and select Run.
This will launch a window containg software and repositories. Select your desired items and click OK to install.
A prompt will ask for you permission to install the software, select Yes. During installation, you will also receive the option to purge outdated files. You can use this option to reduce clutter due to outdated package files.