OS.js is an open-source web desktop platform with a window manager, application APIs, GUI toolkit, filesystem abstractions and much more.
NOTE: you no longer have to do run build it since its already made. but because node_modules is empty. you can do npm i or install.
# Install dependencies
npm install
# Start serving
npm run serve
and enjoj!
but if you're too damn lazy to npm i on this. download the zip file so you dont have to. https://www.mediafire.com/file/fhsrwfyswlf5hm8/OS.zip/file