Electric Firebird — Firebird Engine Compiled to WebAssembly, With a Live Browser Demo

Electric Firebird (mariuz/electric-firebird on GitHub) compiles the Firebird database engine to WebAssembly, following the same approach PGlite took for PostgreSQL. The goal is to let Firebird run both server-side (Node.js) and fully client-side in the browser, with no server round-trip required for queries.

Highlights:

Two backends: a native Node.js implementation (via the Firebird Embedded Server) and a WASM build for browsers

Browser version persists data to IndexedDB, surviving page reloads

Parameterized queries, transactions, typed values, and cross-tab safety are supported

Apache-2.0 license

Requires Node.js 20+ and a Firebird client library to build; WASM compilation uses an Emscripten SDK

Live in-browser demo (SQL runs entirely client-side, nothing is uploaded): https://mariuz.github.io/electric-firebird/

Still under active development — DDL/DML execution and transactions are confirmed working in both Node and Chromium — but feedback, testing, and contributions are very welcome.