Review of FerretDB powered by the Slant community.
A truly Open Source MongoDB alternative. FerretDB provides an alternative to MongoDB as it abandoned its open-source roots, changing the license to SSPL. It converts MongoDB wire protocol queries to SQL, and uses PostgreSQL as a database engine.
Read Another open source database emerges, should you use it?.
SpecsUpdate
PlatformsWindows, Linux, Mac
TechnologyGo
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Pros
Pro Open source
Pro Based on Postgres
Turns a new or existing Postgres database into a MongoDB-compatible database