What are some alternatives?
When comparing GCstar and Ant Movie Catalog, you can also consider the following products
Data Crow - Data Crow is the ultimate media cataloger and media organiser.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
Numento - With Numento, you will be able to efficiently and easily manage your collection.
Griffith - Griffith is a media collection manager application.
Tellico - Tellico is a KDE application for organizing your collections.
Listal - Listal is a web-based DVD, music, game, book and many other things collection manager.