* [Zasper v1.1.0](https://github.com/zasper-io/zasper) – High-performance IDE for Jupyter notebooks optimized for massive concurrency and low memory and CPU usage.

* [Reacton v1.11.0](https://github.com/widgetti/reacton) – React-like component framework for building reusable web-based UIs in Python with ipywidgets.

* [Jupyter UI v2.0.17](https://github.com/datalayer/jupyter-ui) – React.js component library for building Jupyter-compatible web frontends, including notebooks, cells, terminals, file browsing, rendering, and kernel management.

* [Lumino v2026.10.8](https://github.com/jupyterlab/lumino) – JavaScript packages providing widgets, layouts, events, and data structures for building high-performance desktop-like web applications.