Duck Framework — Build Modern Web Apps with Python

Lively Component System — Reimagined for Duck

Duck's Lively Component System is a real-time UI engine built directly into the framework. It enables dynamic updates over WebSockets without full page reloads — while keeping your architecture clean and predictable.

No external frontend framework. No reactive over-engineering. Just Python-driven components communicating efficiently using msgpack.

✔ Real-time updates — Components update instantly over WebSockets.
✔ Virtual DOM diffing — Only what changes gets patched.
✔ Seamless navigation — Navigate URLs without full reloads.
✔ Unified stack — Backend and dynamic UI in one system.

Try the Lively Counter App