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OS.js is an open-source desktop implementation for your browser with a fully-fledged window manager, Application APIs, GUI toolkits and filesystem abstraction.

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OS.js v3 GUI Module

This is the main client GUI component module of OS.js.

Contains all components and adapters for the default UIs.


This package has two build targets: UMD and ES.

UMD is built with Webpack via npm run build (or npm run watch), and ES via npm run build:esm (or npm run watch:esm).

The OS.js distribution uses the UMD build to load stylesheets, and everything else uses ES modules to load components, service providers etc.

So effectively you need to run both in order for this to work while developing.

The UMD javascript bundle is currently only used for environments like Codepen.



See the Official Manuals for articles, tutorials and guides.