PHOCOA itself contributes several technologies to the framework.
Request Controller - handles automatically handing off web requests to various custom "modules" that will implement the application's logic.
Page Controller - handles initializing, displaying, and maintaining state of UI objects.
Bindings - provides the ability to "bind" UI objects to data objects and thereby elimintate the need to write glue code to move data between the model and the view layers.
PHOCOA Builder - a GUI app (for Mac OS X) that lets you easily configure the UI and bindings for your application.