Scala Downloads

Versions 2.0 and higher have a graphical user interface based on the powerful Gtk+ toolkit which enables portability between Linux, Unix and Windows platforms. After installing, see readme.txt for more information. Download for Windows, Linux, Macintosh.

Versions 1.x are a console application with only a command line which runs in a terminal window (command window, xterm, etc.)



  • Scala 2.38c for OS X 10.5 "Leopard" and higher on Intel/Mac, (5.3 MB)


    1. Update X11

      Download and install the latest Apple X11 package suitable for your OSX version from, or from DVD.

    2. Install Gtk2 Runtime (100 MB) (right-click, Save as). You do not need to reinstall this runtime library for every new Scala release. However if you encounter an incompatible library version message when starting Scala, then download and install the new version of this runtime also. If you have MacPorts installed, then do not install this package but enter this command: sudo port install gtk2, and sudo port install gnuplot if you want to make graphic plots. Or if you have Homebrew installed, then do not install this package but enter this command: sudo brew install gtk2, and sudo brew install gnuplot if you want to make graphic plots.

    3. Install SimpleSynth

      It plays via Apple's DLS Synthesizer and it can set soundfonts:

    This Scala release is not yet well tested on OSX 10.9 so be aware that a problem might occur. In such case please let me know. Start SimpleSynth and then start Scala. Then you can select the SimpleSynth virtual port in Scala's Sound Settings dialog to play MIDI. More on this page by Curtis Macdonald. If you have done an OSX upgrade from 10.6 up then there may be issues with X11. In that case uninstall X11, reboot and install the right version of X11 for the OSX version.

  • Scala 2.22d for OS X 10.4 "Tiger" on PowerPC/Mac, (8.0 MB)

    Note: If you have OS X 10.5 on PowerPC then use the following workaround:

    1. Update X11

      Download and install the latest Apple X11 package from, or from DVD. It's included with Xcode on Mac OS X 10.5 "Leopard". It's located in the "Optional Installs.mpkg" package on the Mac OS X 10.4 "Tiger" DVD. It's on disk 3 of the Mac OS X 10.3 "Jaguar" CD set. Don't forget to install the X11 SDK, too. It is not included by default on earlier systems, and it is required by everything else.

    2. Install MacPorts

    3. Install gtk2 from MacPorts. Go to Utilities and start Terminal, then type

      sudo port install gtk2

    4. Scala

      a) Download and install Tiger package

      b) Control-click, Show Package Contents

      c) Open's Contents/Resources/script with your favourite text editor

      d) Delete lines 13-27

      e) Save Contents/Resources/script

    5. Double-click to run

    Please read the following instructions carefully if you use 10.4 and the information on Install and use Scala on Mac OS X 10.4, especially if you still have OS X 10.3.
    - Check if X11 is installed. If so, you should see an X11 icon inside Applications/Utilities/X11. If not, install it from Apple's OS X DVD (or the above website).
    - Unzip
    - Mount the Scala.dmg disk image (double click on it)
    - Drag the Scala folder from the image into the Applications folder
    - Double click on Scala inside the Scala folder to run
    - Type "help" in the bottom line of the Scala window

  • For other OSX versions, you can download the Windows version and the Windows Gtk+ runtime and run it under CrossOver Mac. The message "Unsupported Software" can be ignored. Sound output works too.

  • Scala 1.82 for MacOS X,

    This is the old command line version and not recommended. Installation instructions:
    - unstuff, move "ScalaX" into Applications
    - go into Terminal window, use the cd command to go to the folder where the Scala files are: cd /Applications/ScalaX
    - start Scala using the command: ./scala
    - then start the tutorial with @tutorial


    Scala can be compiled on almost every variety of Unix and Linux. For PC/Intel, see above. For other platforms, contact the author at

    Scale Archive

    A large collection of over 4400 scale files for Scala is also available for download.

    See the contents listing for a brief description of each scale file in the archive. Here's a description of the file format.

    3 Feb 2015

    Scala home page