I just want to dig up this thread: I really like TagSpaces.
I discovered it yesterday in search of a tool to tag and categorize a large number of videos and images, used for Social Media videos and posts. It really seems perfect for the job.
But: the images from my iPhone (HEIC format) are not readable at all, which is a real shame. Could this functionality please be added to the image viewer? It would be the last piece of puzzle for my new workflow.