The Graphical User Interface is not available for Linux, but the Command Line Interface is. You can download the snow-convert.tar and then run the following commands in a terminal (in the directory where the snow-convert.tar file is located) to install the CLI and configure it so that the command snowct is recognized by your terminal no matter where you are:

sudo mkdir /usr/local/share/.snow-convert
sudo tar -xf snow-convert.tar -C /usr/local/share/.snow-convert
sudo ln -s /usr/local/share/.snow-convert/orchestrator/snowct /usr/local/bin/snowct

You might need to execute these commands with sudo.