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Open Stage Control is a libre desktop OSC bi-directionnal control surface application. It's built with HTML, JavaScript & CSS and run as a Node / Electron web server that accepts any number of Chrome / Chromium / Electron clients.

Download the latest release (prebuilt binaries for Linux, OS X and Windows)

Try the online demo (chrome 49+ required)


The documentation is located at


  • multiplatform desktop server application with built-in client interface
  • mouse & multitouch interfaces compatible with Chrome 49 or later
  • all the widgets you need !
  • built-in live editor
  • clients synchronization
  • deep customization possibilities such as theming and messages filtering
  • true control over what the widgets send
  • midi inputs/outputs

Supported platforms

The server can run on all platforms supported by Electron. Any client that can run chrome browser can connect to the server.

License & credits

Copyleft © Jean-Emmanuel @ AMMD. This program is released under the GNU/GPL3 license.

It relies on the use of several libraries :