Siri by Apple

Siri is a virtual assistant developed by Apple, and used in the company's iOS, watchOS, macOS, and tvOS platforms. Also, it is powering the Apple's smart speaker - HomePod. Siri uses voice queries and a natural-language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of Internet services. The software adapts to users' individual language usages, searches, and preferences, with continuing use. Returned results are individualized.