Backend as a service alternatives are worth considering when the incumbent gets expensive, restrictive, or invasive.
Backend server with REST APIs to manage core backend needs
If you currently rely on Firebase and want more control over data, lower long-term costs, or a open-source licensing model, Appwrite covers most of the same ground.
Most open-source alternatives require more setup than their commercial counterparts and may lag on polish, mobile apps, or ecosystem integrations. Check the project’s documentation for current feature parity with Firebase before committing.
This recommendation is indexed from awesome-oss-alternatives. Read their full project notes for the latest changes.