Lexi - Speak to Alexa through your iPhone
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
Astra by Cesbo - Talk to Alexa anywhere, from your iPhone
HomePod mini - A smart speaker with Siri built in
Ava - Making conversations accessible for the deaf
Tmall Genie - Alibaba's Echo-like smart speaker competitor