NiceGUI

NiceGUI is an open-source Python framework that lets you create web-based user interfaces with a desktop-GUI feel, all from Python. Developed by Zauberzeug, NiceGUI takes a backend-first approach — all UI logic lives in Python, the framework handles WebSocket communication with a Vue/Quasar frontend. This makes NiceGUI particularly well-suited for robotics, IoT control panels, hardware dashboards, and internal tooling where you want a polished browser UI but don't want to write JavaScript. NiceGUI v3.0 (released late 2025) was a major milestone that improved the architecture significantly. The framework supports standard GUI components (buttons, inputs, sliders), data visualization (charts, tables, maps), 3D rendering, virtual joysticks, and even runs in Jupyter Notebooks. It runs on FastAPI under the hood, so you can mix NiceGUI routes with regular FastAPI endpoints. With 15.5k GitHub stars and an MIT license, NiceGUI occupies a unique niche for Python developers who need interactive GUIs for physical-world or embedded applications.