KeePassX Password Safe is a free, open-source, light-weight and easy-to-use password manager for Linux, Windows and Mac OSX.
Originally KeePassX was called KeePass/L for Linux since it was a port of Windows password manager Keepass Password Safe.
After KeePass/L became a cross platform application, it changed it’s name to KeePassX
KeePassX offers a little utility for secure password generation. The password generator is very customizable, fast and easy to use. Especially someone who generates passwords frequently will appreciate this feature.
Ubuntu users: The application is available in the Ubuntu repositories, but if you want to install the latest version you can either add the KeePassX PPA, or direct download of .deb files