OS.js is an open-source desktop implementation for your browser with a fully-fledged window manager, Application APIs, GUI toolkits and filesystem abstraction.It works in any modern browser and can be deployed on any platform using Node or PHP.
OS.js is completely free and open-source which means you can contribute to the development or use the code as you like.
– Features a fully customizable Web Desktop and Window Manager inspired by Linux desktop environments, built to be blazingly fast and feel like the real thing.
With the Virtual Filesystem you can upload, download and modify your files across several cloud storage soultions, including Google Drive, Dropbox and OneDrive
– Includes a default suite of Applications: File Manager, Music player, Video player, Picture viewer and editor, Calculator and text editors.
You can easiliy add more applications and features using the official repositories or community contributions.