PocketBase

PocketBase is an open-source backend written in Go that ships as a single executable: it bundles an embedded SQLite database with realtime subscriptions, file and user management, a built-in admin dashboard UI, and a REST-ish API, so a small backend can run without assembling separate database, auth, and API services.

You can use it two ways: run the prebuilt executable directly (extendable with JavaScript via its built-in JS VM plugin) as a standalone backend, or import PocketBase as a Go library/framework to add your own custom business logic on top while still producing one portable, statically-linked executable. Official SDKs are available for JavaScript and Dart.

The project notes it is still under active development, and full backward compatibility isn't guaranteed before reaching v1.0. PocketBase suits small-to-medium projects, prototypes, or embedded/self-hosted apps that want a minimal, single-binary backend rather than a multi-service stack.