These are great, I’ve been using the accetto firefox images for several years. I was surprised recently when I purchased a $5 VPS and was able to use it without performance issues. I actually like using TigerVNC more with it than NoVNC because the quality is usually better, and it just seems to work better in full screen. Though, NoVNC lets you setup a machine then easily send it to someone to continue or collaborate.

There’s also neko and some other related projects that aren’t completely the same, but slightly better for collaboration.

Is it really a virtual machine? It's running from a container, so it's just a containerized desktop exposed over VNC, right?

Is it actually running its own kernel?