MongoDB Atlas

Managed document database with a free forever tier

mongodb.com · Free M0 cluster; paid from $9/mo

MongoDB Atlas: hosted document DB with flexible schemas, full-text + vector search built in, and a free M0 cluster that never expires.

Capabilities

Capabilities

  • Document model, aggregation pipelines, Atlas Search (Lucene) and Vector Search
  • Free M0 512MB cluster forever; serverless and dedicated tiers above

Best for

  • Document-shaped data (content trees, activity feeds) and quick prototypes

Not for

  • Strongly relational data — use Postgres (Neon/Supabase) instead