Amazon

Key features:

• Voice control your smart home - Turn on lights, adjust thermostats, lock doors, and more with compatible connected devices. Create routines to start and end your day.
• Keep your family in sync - Use your Alexa devices like an intercom and talk to any room in the house with Drop In and Announcements.
• Alexa has skills - With tens of thousands of skills and counting, Alexa is always getting smarter and adding new skills like tracking fitness, playing games, and more.
• Designed to protect your privacy - Built with multiple layers of privacy controls, including a microphone off button that electronically disconnects the mics.