Here you can download the gnutVis application. It will launch using Java Web Start.
The source code is also available, as a zip file, further down the page along with the JavaDoc pages.
You may wish to download the GWebCaches file to allow quicker connection to the network.
Note: This page uses a JavaScript to check whether Java Web Start is installed on your computer. Internet Explorer may give a security warning about this, however, the script is perfectly safe to run, and it is recommended that you do so.
The full source code of the application can be downloaded by clicking here.
The JavaDoc pages can be viewed by clicking here.