This is an experimental tool that lets people compare what book covers are available through different APIs. It uses four underlying services to lookup that information: LibraryThing's covers API, OpenLibrary's JSON API, Amazon's Associates Web Service, Google's Books API and Worldcat's xISBN.

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

Software using WorldCat API to produce a customized view of Worldcat.   Page includes a nice screen cast describing Bridge

Developer's Guide

The Google Chart API lets you dynamically generate charts. To see the Chart API in action, open up a browser window and copy the following URL into it:

http://chart.apis.google.com/chart?cht=lc&chs=200x125&chd=s:helloWorld

Press the Enter or Return key and - presto! - you should see the following image:

From the website:

Mechanical Turk aims to make accessing human intelligence simple, scalable, and cost-effective. Businesses or developers needing tasks done (called Human Intelligence Tasks or "HITs") can use the robust Mechanical Turk APIs to access thousands of high quality, low cost, global, on-demand workers -- and then programmatically integrate the results of that work directly into their business processes and systems. Mechanical Turk enables developers and businesses to achieve their goals more quickly and at a lower cost than was previously possible.

Google Mapplets Concepts and Examples

Google Mapplets are mini-applications that you can embed within the Google Maps site. Examples include real estate search, current weather conditions, and distance measurement. Mapplets are Google Gadgets that can manipulate the map using Javascript calls that are derived from the Google Maps API.

Mapplets are currently only available in a special Developer Preview version of Google Maps at:
http://maps.google.com/preview

Mapplets are new, so there may be bugs and slightly less than perfect documentation. Bear with us as we fill in the holes, and join the Maps API discussion group to give us feedback.

While Creative Commons offers a range of license choices and public domain options direct from its license page, if you have created an application or built a website that allow people to contribute works you may prefer to integrate the license engine directly into your site or application. This guide serves to explain all the steps necessary and options available for integrating Creative Commons into your software. If you are integrating Creative Commons licenses with a non-web application, or would like more control over the user interface, the Creative Commons Web Services may be more appropriate.

This little tool can be used as a nice spellchecker.