In the absence of a universal Web-widget standard, we believe that UWA (Universal Widget API) is a real breakthrough. In Netvibes.org they want to engage in any discussions that would start around standardization, or at least about interoperability, in the widget world.
There are many different types of photo APIs, including photo sharing and management APIs, image editing APIs, and APIs that specialize in image slideshows, geolocation, and mapping. In fact, there are so many APIs that there’s now a ProgrammableWeb? Photo API and Mashup Dashboard to keep track of them all in one place
In a move that was anticipated for weeks, Google has unveiled a set of application program interfaces (APIs) that allow third-party programmers to build widgets that take advantage of personal data and profile connections on a social-networking site