Mmarimo (acquisition by CoreWeave announced October 2025) · Notebooks & interactive computing
Reactive Python notebook stored as a plain .py file that re-runs dependent cells automatically and doubles as a script or web app
Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026 PJProject Jupyter (NumFOCUS) · Notebooks & interactive computing
In-depth entry Open-source computational notebook ecosystem: the .ipynb format, kernels for Python, R and Julia, JupyterLab and Notebook interfaces and JupyterHub
BSD-3-ClauseOpen sourceFreeLocalSelf-hostedNov 2, 2026 PPython Software Foundation · Programming languages & runtimes
In-depth entry General-purpose, dynamically typed programming language with a large standard library and the dominant ecosystem for data science and machine learning
PSF-2.0Open sourceFreeLocalSelf-hostedBroken