Letterboxd - Letterboxd is a social site for sharing your taste in film, now in public beta.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
Taste - Get movie suggestions based on personal taste.
Filmotech - Filmotech is a movie catalog software for movies on DVD, Blu-ray, DivX, CD, VHS and more.
Itcher - Movie, book, music & game recommendations you'll love
Eax Movie Catalog - Eax Movie Catalog is a handy organizer that creates a fully customizable catalog of your digital collection like movies, TV shows, ebooks, video games, documentaries, and all kinds of CDs and DVDs.