OS.js is a web desktop platform with a window manager, application APIs, GUI toolkit, filesystem abstractions and much more.
Can be installed on all platform and runs in any modern web browser.
This manual contains tutorials, articles, resources, developer information and guides on how to use OS.js.
To try it out, check out the official v3 online demo. Please note that this might be down for maintainence at times, or running an unstable version.