I built a 'serverless' platform that's similar, smaller but more focus on low-code than Supabase https://saasufy.com/

All the components are declarative HTML and update in realtime. Similar concept as HTMX but doesn't require any backend code. You can still implement complex UX, authentication, access control and filtered views (indexing and all).

I built this app with it over a few months as a weekend project: https://www.insnare.net/app/#/onboarding/country/All