Their main home page doesn't mention Supabase: https://www.getmotoradmin.com/
1) It does not appear to have good support for custom Postgres data types (which is reasonable, given that Motor admin appears to work with multiple SQL databases, rather than just Postgres)
2) Its handling of hiding columns is somewhat hacky - if you hide columns from being shown, they're hidden from inserting and editing as well. This can cause issues if you'd like to hide some NOT NULL columns from being displayed.
3) It seems to inject its own 'ID' column into all 'Resources' in the admin panel, and will not be happy if you happen to have an 'ID' column. (As far as I can tell, it seems that the 'Resources' of Motor admin are precisely Ruby on Rails Resources, and that Motor admin generates Rails classes and Resources for you based on your database schema)
4) It does not allow 'unusual' table names such as names containing ':', '--', etc (This seems to cause the generated Ruby class names to become invalid)
To cope with the above issues, I've created Postgres tables for the express purpose of being managed by Motor admin, with the admin tables being sync-ed with the backing tables via triggers. I've attempted to use views instead, but it seems that Motor admin does not recognise views.
Also, the maintainers take the reported issues seriously, and have been at task with fixing them.
Unless this admin panel directly connects to the postgres instance?
It has several advantages comparing to Retool like simple self-hosting option, CRUD UI out of the box, periodical data reports (aka alerts), unified UI optimized on mobile (instead of retool's more complex UI builder).
https://www.getmotoradmin.com/pro
Another entry for https://sso.tax
I never tried MotorAdmin as it seems to be a young project. But it provides a great open-source alternative to Forest Admin as the value proposition explained on the website has been highly influenced by our tool. It is always a great sign for me :-)
What I can say about Forest Admin and that we spend years to provide all the fundamentals to get started with a great admin panel and also all the required features for fast-growing companies to huge corporate.