Tellico - Tellico is a KDE application for organizing your collections.
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
Openreads - An Android app for keeping tracks of books you have read. - GitHub - mateusz-bak/openreads-android: An Android app for keeping tracks of books you have read.
BookPedia - Whether books line every wall of your house or barely fill one shelf, Bookpedia is the perfect...
BookBuddy - Kimico is a software development company focused on bringing you Essential iPhone and iPad apps designed to keep you organized.
Readerware Book Database - The easiest, fastest way to catalog your books, nothing else comes close.