Wren - Offset your carbon footprint by saving rainforests
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
YAYZY - Track the carbon footprint of each purchase in real-time
Sonos One - A self-contained, Alexa-connected speaker from Sonos
Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.