The Voice2Phone Outbound Calling API is a REST-based system that allows developers to integrate voice over IP functionality with their applications. This API requires API Keys for authentication, and uses HTTPS, JSON, and XML for data exchange. The Outbound Calling API supports landline and cellphone calls.
We've added twenty six APIs to the ProgrammableWeb directory in categories including Messaging, Transportation, Location, and Open Data. Highlights today include an API that can provide developers with Uber driver information, and the Hypertrack.io API, for adding location tracking features to apps.