I have also been using Coolify happily since its early(?) days (mid 2022 IIRC). One big plus for me is that there is nothing to be installed on the client: No CLI, etc. In my specific use case, I switch laptops I work with, so it's a huge advantage that I can just open the UI in the browser and do my work. Of course there is room for improvements in many corners of it, but I couldn't get any of the alternatives to works the same way, yet.