PPassKeeper is a library that intends to create a portable way of storing sensitive information, such as passwords, into a safe place. In order to be portable and flexible, the library allows third-party developers to improve it by creating plugins that can be free (as in freedom) or proprietary

Goals

Provide a common interface for desktops and operating systems to access secure password storages
Be modular
Allow third-party developers to easily create new modules
Be backward compatible