ASCIIFlow is a less full featured web app with similar functionality to Monodraw, for all the windows/linux/chromebook users wishing for an electron version
I was looking to see if this had been mentioned yet. As a Monodraw owner who recently has been forced to only use a Windows laptop for work I was pleasantly surprised a couple months ago by another article on hacker news that referenced this great web app. Just so happened in the comments here I also learned about Moebius which I also want to try out.
I used asciiflow for a bit then discovered how easy it is to lose your work. (or, at least, it was)
Then started using monodraw. Love it.
Literally just came here to link to asciiflow. It's great!