# 3 Best Free Alternatives to MongoDB Atlas in 2026

By Noah — last updated & pricing verified September 15, 2026.

> 3 of the 4 MongoDB Atlas alternatives we list qualify for this filter. The [full list](https://findalternative.to/mongodb-atlas) is the canonical page.

| Alternative | Best for | Price | Details |
| --- | --- | --- | --- |
| Supabase | developers who want a Postgres-based backend (auth, storage, realtime, auto-generated APIs) they can self-host later, rather than committing to a proprietary NoSQL platform like Firebase | Free tier · paid from $25/mo | https://findalternative.to/supabase/about |
| Firebase | mobile and web developers who want a fully managed backend (database, auth, hosting, functions) without provisioning or maintaining their own servers | Free | https://findalternative.to/firebase/about |
| CockroachDB | teams running multi-region transactional workloads on PostgreSQL-compatible SQL that need automatic failover without manual sharding | Free tier · paid from $0.18/mo | https://findalternative.to/cockroachdb/about |

All 4 alternatives to MongoDB Atlas: https://findalternative.to/mongodb-atlas

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Markdown mirror of https://findalternative.to/mongodb-atlas/free — findalternative.to, honestly ranked software alternatives. AI info: https://findalternative.to/ai