Discusses various alternatives to Amazon API for ISBN, metadata and covers images.  

"i-Covers is a free software, conceived to search and download on Internet all sleeves, pockets, jackets, covers and movie posters.

i-Covers connects to Internet to interrogate 16 data bases different and to display the result of your research in graphic form. i-Covers is the indispensable software for all fans of movies and amateurs of videos, Vhs, Dvd and Divx."

"content@ingram is Ingram Data Services' richest and most comprehensive data set containing detailed bibliographic, metadata, and stocking information on all titles carried by Ingram. Ingram is proud of the unequalled integrity and breadth of product you will find in this database."

"Images - images@ingram encompasses more than 1.7 million full-color cover images that add instant visual appeal and interest to your website or in-store title reference system."