The Evernote Cloud iOS SDK by Evernote is the official Objective-C implementation by Evernote. This SDK calls the Evernote Cloud API which provides data collection services. Developers need to obtain an API key.
Perhaps the biggest surprise in today's Apple announcements is that the voice command feature, widely anticipated since the largest mashup acquisition ever, is keeping the name "Siri." The newest version of Apple's iOS for iPhone and iPad will include the features of the voice command iPhone app that some called the "ultimate mashup."
Clickatell, a leading mobile messaging and global communications solutions provider, has just announced the launch of the new Connect API allowing developers to integrate into their web and mobile applications in-app Short Message Service (SMS) functionality.
The non-profit built for "opening America's government" has created an app to show off its Congressional data, as well as its API (our Sunlight Labs API profile). You can't get this app on the web, though, as it's available exclusively for the Android phone platform.