Your database is first. But can PostgreSQL be second?
Nice overview of the possibilities of PostgreSQL with some use cases.
A fast PostgreSQL Database Client Library for Python/asyncio
Postgres CLI with autocompletion and syntax highlighting
With Glom you can design database systems - the database and the user interface. Similar to MS Access and others. Uses PostgresQL
REST API for any PostgresQL database.
Pgcli is a command line interface for Postgres with auto-completion and syntax highlighting.