1
Supabase Free tier Open Source

Open-source Firebase alternative providing a Postgres database, authentication, storage, and edge functions.

Free for 2 projects, pauses after inactivity · Paid from $25/mo Developers who want a full backend with Postgres at the core
Postgres Auth Storage Realtime
2
Neon Free tier Open Source

Serverless Postgres with autoscaling, branching, and a generous free tier for modern applications.

Free tier with 0.5 GB storage and 190 compute hours · Paid from $19/mo Developers who want serverless Postgres with branching and scale-to-zero
Serverless Postgres Branching Scale-to-Zero Autoscaling
3
Firebase Free tier

Google's app development platform providing a realtime database, authentication, hosting, and cloud functions.

Free Spark plan with generous limits · Paid from Pay as you go Mobile and web apps that need realtime sync and fast prototyping
Firestore Auth Cloud Functions Hosting

Quick comparison: PlanetScale vs Supabase

Feature PlanetScale Supabase
Starting price $39/mo $25/mo

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