Is there such an engine?

Question

CMS

Hello. Tell me if there is such an engine with which users, being on my site, could work like on the desktop. Kind of a simulation. I saw something similar online. Are there such drives?

Answer 1

OS JS:
Demo
Of. site
Something else:
Demo
Repository (before using, I recommend that you read the license)

Answer 2

Thank you ! Exactly what is needed.