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Aiven

Managed open source data services.

What it is

It offers free plans for managed PostgreSQL, MySQL, Valkey (Redis) and Kafka, with backups, metrics and automatic updates. Very useful when you want one specific piece of infrastructure without administering it.

Best for

Trying managed Kafka or Valkey without a credit card.

What the free plan includes

  • PostgreSQL, MySQL, Valkey and Kafka on the free tier
  • Reduced CPU, RAM and disk resources
  • One free service per type

Free plans change often. Confirm the limits on the official page before deciding.

Supabase

Pick

A backend on Postgres with auth, storage and realtime.

Free projects with 500 MB of database

Open source

Neon

Pick

Serverless Postgres with instant database branches.

Free plan with 100 projects

Turso

Distributed SQLite at the edge, replicated close to your users.

Free plan with 100 databases

Open source