WebGUI has 4 complete translations (English, Dutch, German and Spanish), and several partial translations.  The full translations have been included in source distributions of WebGUI since 7.9.

To install a translation on your server to use on your site:

1. Visit i18n.webgui.org and download the translation that you want to install on your server.
1. Users with shared hosting setups may need to contact technical support to assist you with this.
2. Untar the translation and (.. wait until I can finish this part later).