This Day in Computer History https://www.computerhistory.org/tdih/ ★★★★★
pyxll
Python for Excel https://www.pyxll.com
https://www.mathpax.com/myposts/software/pyxll/ ★★★★★★
Pythonista
Python for iOS http://omz-software.com/pythonista/
https://www.mathpax.com/myposts/software/pythonista/ AdaptedMind
We turn real math into a delightful game http://www.adaptedmind.com/ ★★★
PythonAnywhere
Web hosting service based on Python https://www.pythonanywhere.com/ ★★★★★
Microsoft Azure Notebooks Preview
Jupyter notebooks in the cloud — currently a free service https://notebooks.azure.com/ ★★★★
The Jupyter Notebook
Documents that contain live code, equations, visualizations and narrative text http://jupyter.org/ ★★★★★★★★★★
3 Blue 1 Brown
Animated math http://www.3blue1brown.com/ ★★
Enthought
Canopy — Python distribution
👎I’m disappointed with things at Enthought https://www.enthought.com/product/canopy/
| Inscribed rectangle problem | The hardest problem on the hardest test |
Numberphile homepage https://www.numberphile.com/
| Josephus problem | Fermat’s last theorem |