OxideDB is a translation layer that works as a MongoDB database server while using PostgreSQL’s JSON capabilities as the underlying data store.

This project might be something that you could be interested on if:

You spend too much time managing; or too much money paying for a MongoDB instance, while only using it as a simple document store, without any sharding features
You already have a running PostgreSQL deployment, or prefer to manage it over MongoDB

On the other hand,…