Google offers a number of libraries in Python language to use Google App Engine, the platform-as-a-service that allows to build apps in the cloud. It is allowed to add third party packages to the application. Python documentation available at https://cloud.google.com/appengine/docs/python/refdocs/
Microsoft just announced one of the more groundbreaking enhancements to its app maker, Windows App Studio. The REST AI Data Source allows users to retrieve data from third party API providers. The move greatly expands the potential for app development within the Windows App Studio environment.
Feedly, one of the most popular alternatives to the defunct Google Reader, has just announced that the Feedly API is now open to all developers. Last month, Feedly kicked off a paid subscription service, Feedly Pro, offering the first 5,000 subscribers a lifetime subscription for $99.99. Feedly raised almost $500,000 within the first eight hours.