MVC - Model-view-controller

Model-view-controller

Model-view-controller (MVC) is an architectural pattern used in software engineering. In complex computer applications that present a large amount of data to the user, a developer often wishes to separate data (model) and user interface (view) concerns, so that changes to the user interface will not affect data handling, and that the data can be reorganized without changing the user interface. The model-view-controller solves this problem by decoupling data access and business logic from data presentation and user interaction, by introducing an intermediate component: the controller.

Perl::Catalyst
Perl::Jifty
PHP::CakePHP
PHP::Zend Framework

The brief is a good brief of wikipedia, I love its style forever.