Lark: Open-source realtime database compatible with Firebase SDKs
Lark is an open-source realtime database that is fully compatible with Firebase SDKs, allowing easy migration and self-hosting.
Launched in early 2026, Lark is an open-source realtime database that mirrors Firebase RTDB functionality. It allows users to run the database on their own infrastructure while maintaining full compatibility with existing Firebase client SDKs, making project migration straightforward. Built in Rust with Glommio, Lark offers low latency and introduces new features for enhanced performance.