The Plivo Android Sample Code by Plivo provides tutorials that allow developers to integrate telephony features into mobile applications. Examples include phone registration, outbound call, and inbound call.
Out of a beige windowless office in Chicago comes a product that just might revolutionize what you thought was possible on the web. X-Stream.ly is a pure play API service offering low-latency high throughput real time messaging with no server side coding required. The x-stream.ly API is a pretty competitive offering in the real time API space.