I have read there was something in the past but it is removed and not returned.
So therefore this suggestion to create a list with all supported apps and devices (if possible including the github apps), categorized by type and also including how Homey is able to use it. So which events, variables and actions can be used/triggered via Homey? In other words, how can the app be used in flows in the IF, AND/OR and THEN sections.
It would be great to get full potential of what you have, but also to be a factor in which device to buy if there are multiple choices and to see if you miss something without knowing.