Coolify is an open-source and self-hostable all-in-one (IaaS) solution to host your applications, databases, or other open-source services. It's an alternative software to Heroku and Netlify and other similar software out there.

dbKoda is an open source, gluten free dev/admin tool for MongoDB. Includes a rich code editor with syntax highlighting, formatting and autocompletion, advanced visual aggregation editor, indepth storage diagnostics and menu based admin.

Why overpay for managed databases? Hippobase makes it easy to self-host open source tools like Postgres, MySQL, MongoDB, Redis and others.