[dropofwill]

Been a long time since I used it, but this is sort of how Illustrator works. You do setup a canvas at first, but you can draw stuff anywhere in the whole workspace. It’s not infinite and doesn’t auto expand, but it is huge.

The canvas is more of a way to group objects for export, you could resize and duplicate them all over the workspace.

I used to use them as an ad how version control system, duplicate objects to play around off canvas, and then “commit” to a new canvas.