Tellico - Tellico is a KDE application for organizing your collections.
Readerware Book Database - The easiest, fastest way to catalog your books, nothing else comes close.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
BookPedia - Whether books line every wall of your house or barely fill one shelf, Bookpedia is the perfect...
Numento - With Numento, you will be able to efficiently and easily manage your collection.
BookDB - BookDB is a free book catalog/catalogue program from Spacejock Software.