BiblioteQ strives to be a professional cataloging and library management suite, utilizing a Qt interface and providing connectivity to PostgreSQL and SQLite. It is a free and open source book organizing application that's well-designed, user friendly, attractive, advanced, efficient and reliable.
Here are some screenshots to illustrate the features and user interface of this application:
tinyMediaManager
Videonizer
EMDB
Helium Music Manager
Home Manager