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 PPlotly Technologies Inc. · Data visualization
MIT-licensed interactive charting libraries for Python (plotly.py), JavaScript (plotly.js) and R, plus the Dash framework for analytical web apps
MITOpen sourceFreeLocalNov 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