The Optimizely Event API returns event data to display in web, mobile, and server-side applications. It's available in REST architecture with JSON data object, and OAuth2 and token as the authentication methods. Optimizely is an experimentation platform.
Seventeen APIs have been added to the ProgrammableWeb directory in categories including Artificial Intelligence, TV, and Video. Featured today is the Google Activity Recognition API which can monitor physical activities of users and improve performance. Here's a rundown of the latest additions.