OSBW Existing Software
List of Existing Open Source Book Widget Software and Projects
Author: Dietmar Mitterer-Zublasing
Plugin homepage: http://wordpress.org/extend/plugins/amazon-einzeltitellinks/
Includes book cover and link (option: with amazon partner id) to amazon in blog posting.
Amazon Book Picture
Author: Serhat Cinar
Plugin homepage: http://narcanti.keyboardsamurais.de/amazon-book-picture.html
Include a simple tag with a books asin or isbn in your posts which is replaced by an image of that book from amazon.
Author: Christian Hauschke
Plugin homepage: http://infobib.de/blog/2008/08/20/isbn2wp-alpha-release/
License: GNU GPL
The plugin grabs bibliographic data (Dublin Core) the Common Union Catalogue via SRU, adds a search link to GVK via SeeAlso (I currently use isbn2gso) and includes a OpenUrl COinS.
Openbook Wordpress Plugin
Author: John Miedema
Plugin homepage: http://johnmiedema.ca/openbook-wordpress-plugin/
OpenBook WordPress Plugin inserts a book cover, title, author, and publisher in WordPress, like the example in this page, or like the example in the sidebar. It links to detailed book information in the data source, Open Library. OpenBook also links to the library record in WorldCat, and inserts COinS so that other applications like Zotero can pick up the book data. OpenBook is useful for book reviewers, book bloggers, library webmasters, anyone who to put book covers and other book data on their WordPress website.
Research Blogging and CrossRef
Author: CrossRef (?)
Plugin homepage: http://sourceforge.net/projects/crossref-cite/
License: GNU GPL
Look up a reference at  and include DOI citation in blog posting.