The Clickatell Android SDK by Clickatell communicates with the API to integrate SMS into mobile devices. It includes an Android studio project. Author recommend to change authentication details before acual development.
From lights and switches to people and cars, SmartThings aims at communicating with everyday devices through a smartphone. With the availability of the SmartThings API, developers can add similar functionality with third party applications to create a more automated world. Although SmartThings strongly believes in the power of smart and mobile devices, it believes the inherent intelligence of smart devices will remain limited. Accordingly, SmartThings exists to transfer the “intelligence” of such devices to the application layer, and away from the physical device itself.
Twilio has introduced the Twilio Proxy API, a new API for building private text and voice conversations between customers and mobile workers. The company also announced the new Twilio Engagement Cloud, a suite of Declarative APIs with additional business process and logic built in.