A few weeks ago I discovered this great software : Book Collector from Collectorz
I've been using it since and it's real cool. if you know the ISBN number it will look up for all the details available. IF no ISBN it links to different Libraries in the world....any sometimes it gets info too...
Very easy to manage, even makes interesting configurable statistics. really recommended !
From the Site:
Create a comprehensive book database
* List all book information: Genre, Subject, LoC & Dewey classification, etc..
* Include personal details like purchase date, store, location, read-it, etc..
* Catalog chapter lists, characters and book creator credits
* Link your book entries to e-book or audio-book files.
Then enjoy browsing your home library on your computer
* View your book database as a list or as gallery of cover images.
* Group books by author, publisher, genre or any other property.
* Find books quickly, either by title, author or anything you want.
Anyway, I would like to hear if some of you use software to manage your libraries ? if yes, which? any comments? advise?