Sitepen has put together an application called the Dojo Toolbox built on Adobe AIR that gives you access to Dojo’s APIs and source code documentation regardless of whether or not you have an internet connection. You can also make use of the Dojo build tool which lets you manage dependencies, optimize your code, and a bunch of other stuff.

The application was co-sponsored by Adobe and it actually uses the Dojo framework for AIR, so it’s basically 100% Dojo. Ajaxian has a good writeup of the application.