I often need a PostgreSQL server for testing an application, vibe coding, or troubleshooting a PG client. Inspired by Neon's architecture, I implemented PostgreSQL WASM (PGlite) with a cloud proxy (via Websockets) at https://postgresql.dbfor.dev

All the PostgreSQL data lives in your browser, and you have unlimited PostgreSQL servers that persist the data locally without installing anything.

This is very cool.