FerretDB Cloud: Open Source Alternative to MongoDB Atlas?
FerretDB Cloud is a managed MongoDB-compatible service storing data in PostgreSQL via DocumentDB, available on AWS with enterprise features and paid tiers.
AWS pledges allegiance to interoperable open databases
Amazon DocumentDB is a serverless, MongoDB-compatible managed document database, and the open source DocumentDB project now resides under the Linux Foundation.
DocumentDB, an open-source PostgreSQL-based document database under the MIT license, joins the Linux Foundation offering MongoDB compatibility and vendor-neutral development.