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.
Looking for something cool to do but have no idea where to start? A tool like LairOut could be helpful in this situation. It's basically a web-based event directory that allows users to access information on a number of events happening in and around their location. LairOut also provides the LairOut API that allows developers to access this functionality.