The Decibel C# SDK allows developers to query the Decibel API to return music metadata. Calls to the Decibel API are made through query objects, which take care of all the logic involved in running a REST query, including deserializing the results to handy result objects. These can then be used to integrate Decibel data into an application.
Spotify has launched a suite of Podcast APIs. Through the APIs, developers can create Podcast experiences specifically for Spotify listeners. The Podcast APIs add nine new endpoints to Spotify's host of developer APIs. For the moment, all of the new Podcast endpoints are in beta.
The Take.io API from Brazil has a REST protocol with data formats in XML and JSON. According to Take.net, "The take.io RESTful API currently defines five services: SSO, Core, Billing, Messages and Reports." The company states further that, "Take.io is Take.net DNA translated into a set of APIs designed to allow companies to use SMS, MMS, voice, pricing, location, CRM, etc., all of which are integrated with their existing systems."