The API.AI Android SDK by API.AI interacts with the natural language processing features of the API. Guides explain how to integrate speech recognition, create a new application, and integrate with the SDK.
Affectiva's emotional measurement API has been around for a couple of years now. Affectiva has seen adoption by marketers, publishers, gaming companies, and chat services. However, Affectiva believes it can greatly expand the use case scenarios by offering its service at no charge to startups.
Amazon has empowered more location-based services through Alexa with the release of a Device Address API. The API allows for the development of Alexa skills that require location data. For instance, consider a food delivery skill. Without an address, the skill would not function accurately.