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Deepnote Open‑Sources Modern Notebook, Challenging Jupyter’s Dominance

This is BIG. Deepnote, a company I’ve followed and used since its creation, just OPEN-SOURCED their modern notebook framework 🔥 And honestly, this could be the final chapter for Jupyter. After 7 years of development, @DeepnoteHQ has built something that redefines the notebook experience: reactive, collaborative, AI-ready, and open by default. Core capabilities → Supports Python, SQL, and R → Interactive blocks, charts, and tables → Reactive execution: cells update automatically (no more "Run All") Integrations and compatibility → 60+ native data integrations → Fully .ipynb compatible with no lock-in → Runs locally or inside VS Code, Cursor, Windsurf, and JupyterLab Scalability → Move to Deepnote Cloud with a single command It’s everything we loved about Jupyter, rebuilt for 2025, a genuine open successor 🫶 OSS repo + utilities in thread