This document provides an overview of MainframePHP, a PHP framework based on CodeIgniter. It discusses Mainframe's focus on web apps and inclusion of popular open source tools. The speaker then covers several case studies that use Mainframe, how Mainframe improves productivity over CodeIgniter, its performance capabilities even on low-powered servers, ease of learning for new developers familiar with CodeIgniter, its theme system, asset management features, plugin support via HMVC, and organization of libraries.