I might still have an InDesign Subscription if Adobe had just rolled all of Freehand's capabilities into it --- instead, I keep a Windows computer for it and a stylus (despite Windows having crippled stylus functionality in Windows 10 Fall Creators Update) --- which reminds me, stylus usage in Waterfox broke again and I have to look up how to fix it (again).
Other similar projects?
Another reason for me to knuckle down and write my own (programmable) drawing program....
1. Candlestick https://github.com/Candlestickers/Candlestick
2. StickmanRed’s Fork https://github.com/StickmanRed/wick-editor
3. This brand new fork: https://forum.wickeditor.com/t/started-my-own-fork-luke-tool...
I wish SWF became a common HTML5 transpile format.
Perhaps you could render to Canvas/WebGL/WebGPU, but you still need to reproduce the entire engine there.