Dotument is general purpose document management application that comes with strong support for managing e-book libraries.
This means that you are able with just few mouse clicks to import your complete e-books library, and let the Dotument collect e-books data (incuding covers!) from Amazon. This also means that you are able to search for each single document using Google-like full-text search. Finally, this also means that you are able to organize and keep your documents using interface you are probably already familiar with.