InstantDB

InstantDB provides a real‑time database that lives in the frontend and is managed entirely from the command line. Developers define a declarative schema, push it with a CLI command, and interact with data through a client library that supports queries, transactions, and live updates. The system includes built‑in authentication, permission rules, file storage, presence tracking, streaming, and payment primitives, all accessible via code without a separate dashboard.

The platform is aimed at developers building applications that are driven by AI agents or large language models, as well as startups that need a quick, type‑safe backend without managing separate services. Its relational core lets users model entities and relationships, while the real‑time sync and offline support enable collaborative and mobile use cases.

Distinctive aspects include end‑to‑end type safety, an undo mechanism for destructive changes, and a design that keeps the entire workflow inside the terminal. The solution is open‑source and positioned as an experimental, AI‑focused backend alternative to traditional cloud services.