[Blaec]

Folks following this discussion might be interested in knowing about CoCalc's Whiteboard implementation. https://cocalc.com/features/whiteboard

You can access cocalc.com via your web browser to use the Whiteboard. It's an infinite canvas where you can write using a pen and tablet (like an iPad), make sticky notes using LaTeX/Markdown (or Rich Text), and run Jupyter cells.

The platform supports many kernels without the hassle of installation, including Python, R, Julia, Octave, SageMath, and more. You can also use custom kernel environments...