Pebble Android SDK by Pebble communicates with the API for application development purposes. Pebble wearables allow users to customize apps such as weather and sports. Examples on GitHub show a Golf demo and an Ocean Survey demo to demonstrate how to use the API along with the SDK.
Postman offers a great way for easily interacting with APIs regardless of a background in software development. It is a collaborative platform for API dev that includes a graphical API client and automated testing. This post explores some of the benefits of working with Postman for API design.