Both give you managed Postgres. Supabase wraps it in a full backend platform — auth, storage, realtime, auto-generated APIs, edge functions — so you can build an app without a separate backend. Neon focuses on the database itself, with serverless separation of storage and compute, instant branching, and scale-to-zero that makes per-PR database previews trivial. Pick Supabase for an all-in-one app backend; Neon when you want a best-in-class serverless Postgres under your own stack.
Supabase
An open-source Firebase alternative built around Postgres.
Supabase is a platform that happens to run on Postgres; Neon is Postgres, re-architected for serverless. If you want batteries-included (auth/storage/realtime) reach for Supabase. If you already have your stack and want elastic, branchable Postgres, reach for Neon.
Quick takes
If you're…
You want auth, storage, and realtime without building them→SupabaseSupabase ships all of them around your database.
You want a database branch per pull request→NeonNeon branches are copy-on-write and instant — ideal for previews.
You want scale-to-zero to cut idle cost→NeonNeon separates storage and compute and suspends idle compute.
You want auto-generated REST/GraphQL from your schema→SupabaseSupabase exposes PostgREST and GraphQL out of the box.
You only need the database under an existing backend→NeonNeon stays focused on Postgres without platform lock-in.