Open Source Alternatives to MongoDB

FerretDB

Apache-2.0

A database proxy that enables MongoDB compatibility with PostgreSQL backend, allowing seamless use of MongoDB tools and drivers while avoiding vendor lock-in.

Memgraph

Unknown

Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.

Timescale

Unknown

Extend PostgreSQL for time-series data with automatic partitioning, scalable ingestion, and advanced analytics for mission-critical applications.