Quoted: Pinax is an open-source collection of integrated, but reusable apps for the Django Web Framework.

By integrating numerous reusable Django apps to take care of the things that many sites have in common, it lets you focus on what makes your site different.

Quoted: This document explains how middleware works, how you activate middleware, and how to write your own middleware. Django ships with some built-in middleware you can use right out of the box; they’re documented in the built-in middleware guide.