BRIX was designed using the basic concepts of the Fusebox framework, but probably because it was written before the framework matured, it doesn't use the framework itself. The article "Introduction to the Fusebox Framework" Gives a great overview of how the framework is supposed to work. The current version of the Fusebox framework is available on Fusebox.org.
The BRIX application is similar to Fusebox in the following ways:
Differences: