In a first for US mobile carriers, Sprint has opened up an initial set of REST services for developers to play with for free at their new developer sandbox. With these services (Sprint API profile), developers can now access location, simple presence, and send SMS messages to Sprint handsets without requiring any software installed to the device.
RingPlus, mobile virtual network operator, has announced one of the industry's first public cellular APIs: the RingPlus API. The API offers a carrier-grade wireless platform to the public. With the API, businesses and developers can completely control mobile phone service, and gain access to world-class mobile networks.