Wolfram Alpha, the up-and-coming "answer engine" that we reported on back in May, has just released an API that developers have been awaiting since this spring. The new RESTful API provides access to the vast stores of data and computational knowledge available through the Wolfram Alpha project (technical details at our Wolfram Alpha API profile).
Google announced the Firebase App Indexing API. The API allows users to search for content within the Google app and find personal or public content across apps installed on a particular device. Because the content is stored on the device, the API is functional whether a user is online or not.