GCstar - Great Software to organize your DVDs, Blu-Rays, Games, etc.
Tellico - Tellico is a KDE application for organizing your collections.
Reelgood - Every streaming service in one place, from over 300 free and paid streaming services. Browse, track and watch all your TV shows and movies from one place.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
Must App - Your personal movie assistant
Numento - With Numento, you will be able to efficiently and easily manage your collection.