“Web Intents is a framework for client-side service discovery and inter-application communication. Services register their intention to be able to handle an action on the user’s behalf. Applications request to start an Action of a certain verb and the system will find the appropriate Services for the user to use based on the user’s preference.”
#api
phirehose
PHP interface to Twitter Streaming API
Tropo
“Tropo is a powerful yet simple API that adds Voice, SMS, Twitter, and IM support to the programming languages you already know.”
FRAPI
“FRAPI is a high-level API framework that puts the “rest” back into RESTful. Use it to power your web apps, mobile services, and legacy systems.”
Google Contacts Data API
The main page describing Google’s Contacts Data API, including photo management, updating contacts etc.
googlecl
Access/work with Google services via command line.
Postful: The Web’s Printer
Service for sending snail mail via API, web form, email, etc. Looks like it’d be pretty easy to tie into a web app and automate “real” mail.
OExchange
“OExchange is an open protocol for sharing any URL with any service on the web.”
OpenID Connect
Discovery of and access to identity information via OpenID + OAuth 2.0.