Many MongoDB users often express concerns about licensing restrictions, its proprietary nature, and the risk of vendor lock-in. FerretDB, a truly open source MongoDB alternative, lets you run your workloads in PostgreSQL, using familiar syntaxes and commands.

FerretDB lets you run MongoDB workloads in open source using PostgreSQL as the backend. It does this by converting BSON documents to JSONB in PostgreSQL.

Before settling on a database for your application, you want to be sure you're picking the most suitable option available. Among the key considerations you'll make is deciding between document database or relational database – which is the best fit?

Are you looking to replace your MongoDB instance with an open source solution? You can do that by running FerretDB on Kubernetes with CyberTec Postgres.

In today's world of distributed systems, achieving reliability depends on various factors, one of which is effective observability. OpenTelemetry (OTel) has emerged as a standard for distributed tracing, but passing tracing data to databases remains a significant challenge, particularly with document databases like MongoDB. At FerretDB, we're committed to addressing this challenge.

A primary downside of non-open source solutions (proprietary, SSPL, and other open source pretenders) is that you're always at risk, at all times. At any given moment, that software you depend on may be deprecated – and you're left with months or years of wasted effort.

Do you want to deploy a fully managed FerretDB instance in production in any cloud environment?

We are happy to announce the release of FerretDB v1.24 with support for SQLite authentication – now available via the experimental authentication mode.