marimo.app. The Marimo reactive notebook (previously) - a Python notebook that's effectively a cross between Jupyter and Observable - now also has a version that runs entirely in your browser using WebAssembly and Pyodide. Here's the documentation.
Recent articles
- GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search - 6th September 2025
- V&A East Storehouse and Operation Mincemeat in London - 27th August 2025
- The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025