Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
GCstar - Great Software to organize your DVDs, Blu-Rays, Games, etc.
Data Crow - Data Crow is the ultimate media cataloger and media organiser.
Ant Movie Catalog - Ant Movie Catalog is a free, open-source program made to manage your collection of movies on DVD...
EMDB - Eric's Movie Database - EMDB is an application to keep track of your movie and TV Series collection.
Tellico - Tellico is a KDE application for organizing your collections.