openHAB might be a bit more popular than Caavo. We know about 1 link to it since March 2021 and only 1 link to Caavo. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The other option is the Caavo control centre which will likely become the successor to Harmony if they don't also go out of business through lack of interest. Source: almost 3 years ago
You can start on a general home automation like openhab.org. Source: over 1 year ago
Mi Box - 4K Ultra HD streaming and gaming box powered by Android TV
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Apple TV - New Apple TV running tvOS
ioBroker - flexible and modular application for the IoT and Smarthome
Roku TV - Smart TV that puts your entertainment favorites in one place
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.