Apple HomePod - The new home entertainment system by Apple
API to bot - Convert your API to Alexa skill or Google Home app in 5 mins
Sonos One - A self-contained, Alexa-connected speaker from Sonos
Jovo - 🗣 Build cross-platform apps for Alexa and Google Home
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
Voice Principles - Guiding principles for voice design, all in one place