Koala is a GUI application for less, sass and coffeescript compilation, to help web developers to the development more efficient.
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zaygraveyard Fix issue with the windows install script. (fixes #704)
Whereas the trying to install in "Program Files" the warning is shown even if the install dir is empty or none-existent.
Latest commit 7f0098e Nov 22, 2017



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Koala is a GUI application for LESS, Sass and CoffeeScript compilation, to help web developers use these tools more efficiently for development.



v2.1.0 release Changelog



  • Multi-language Support: support for LESS, Sass, Compass Framework, CoffeeScript and Dust.
  • Real-time Compilation: listens to files, compiles automatically when file changes occur. Everything runs in the background without the need for user input.
  • Compile Options Support: compilation options are avaliable per file.
  • Compression: automatic compression of code after compilation has completed.
  • Error Notification: if an error is encountered during compilation, Koala will display an error notification.
  • Cross-platform: Koala runs perfectly on Windows, Linux and Mac.




koala is built with node-webkit. node-webkit is an app runtime based on Chromium and node.js. You can write native apps in HTML and Javascript with node-webkit.

How to run Koala source code?

  1. Clone Koala to the local;
  2. For windows, I DON'T KNOW YET For Mac OS X and Linux, run ./install.sh
  3. Download node-webkit prebuilt binaries for your system environment.
  4. For windows, copy nw.exe, nw.pak, icudt.dll to koala/src directory, and install Ruby to koala/src/ruby;
    For Linux, copy nw, nw.pak, install Ruby: sudo apt-get install ruby;
    For Mac OS X, copy node-webkit.app, OS X already have Ruby installed.
  5. Run the nw executable file.


koala's code uses the Apache license, Version 2.0, see our LICENSE file.

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