"With this tool you can play with the Data Export API by building queries to get data from your Google Analytics profiles. You can use these queries in any of the client libraries to build your own tools."

"I’ve made a new thing, Today’s Guardian, a website that features today’s edition of the Guardian (or the Observer on Sundays). Hopefully it’s as easy to browse through today’s newspaper as it would be with the print edition. It’s made using the Guardian’s Content API."

Piston is a relatively small Django application that lets you create RESTful application programming interfaces (API) for your sites.

"With the Congress API, you can get summaries of roll-call votes in the U.S. Congress; get lists of members of Congress; and get vote data, biographical information and role data for individual House and Senate members."

"The API returns official NYTimes.com tags that match your search string. Even better, it ranks the results from most commonly used tags to least."

"BOSS gives you access to Yahoo!'s investments in crawling and indexing, ranking and relevancy algorithms, and powerful infrastructure."

"The Yahoo! Internet Location Platform provides a resource for managing all geo-permanent named places on Earth."

"Advocating User-Centered URL Design"

adding to my collection of REST apis

"When you release public APIs...they're out. You don't get to push the magic "recall" button anytime you like with a public API, not even during your Beta period."

a database of books in different languages providing on-line and remote research tools for individuals, librarians, scientists, etc.

"The Google data Python Client Library provides a library and source code that make it easy to access data through Google Data APIs." Finally!

"With the AJAX Feed API, you can download any public Atom or RSS feed using only JavaScript, so you can easily mash up feeds with your content and other APIs like the Google Maps API."