A new release of Bookpedia, version 2.2, came out a few days ago.
Bookpedia is a book cataloging software for Mac OS X. To save you time and effort, it retrieves all book information from the Internet and lets you arrange your books in any which way you like. Using Bookpedia comes naturally thanks to its familiar iTunes style interface. Bookpedia is written exclusively for Mac OS X, making it fast and efficient.
To retrieve information about a book you have various options. You can enter a keyword, the book title and/or the authors name into the Search feature, choose the locale where you want to search (any Amazon site, the Library of Congress, saxo.dk, AngusRobertson.com, or Alapage.com) and hit Search. Once you have found your book you can look for even more information using the Library of Congress and isbn.nu or any of the other sites again. You can also search by scanning the UPC or entering the ISBN into the Search window.
Requires: Mac OS X 10.2+
Cost: $18 USD