LibraryThing - A home for your books.
Helium Music Manager - You can take control of your music collection.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
Music Collection - This Music Collection Software allows you to organize your music collection including CDs, MP3s or vinyl records into a fully searchable database.
Goodreads - See what your friends are reading.
Waf Music Manager - Waf Music Manager is a lightweight and fast application that helps to organize the local music collection, such as large music files, edit, video formats support, high resolution, and many more.