Guidebook, providers of a platform for building mobile applications, unveiled an open-source API. Guidebook's API lets users extract valuable data and content that can then be pushed to custom mobile apps. A range of features, such as group discussions, social feeds, and more can be leveraged.
The Nexmo SMS API is a service that allows you to send and receive SMS messages anywhere in the world. Nexmo provides REST APIs, but it's easier to use their official Java SDK. This tutorial covers how to send and receive SMS messages with the SDK so that you can use them in your applications.