The binary packages for GSL Shell are provided for Windows and Linux for Debian based distributions.
The Debian packages should work on most Debian based distribution like Debian itself, Ubuntu, Linux Mint and others.
To use the windows binaries just unzip the archive is a folder of your choice. To start GSL Shell you need to double click on the executable.
GSL Shell is free software and its source code is available:
You can create a local copy of the git repository using the following command:
git clone git://github.com/franko/gsl-shell.git