Helium Music Manager - You can take control of your music collection.

Tellico - Tellico is a KDE application for organizing your collections.

Music Collection - This Music Collection Software allows you to organize your music collection including CDs, MP3s or vinyl records into a fully searchable database.

Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.

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.

Readerware Book Database - The easiest, fastest way to catalog your books, nothing else comes close.