MODx is an open source CMS that helps you take control of your website. It makes updates easy, empowering end-users with as much control as you desire over website content and update frequency.
Techies call MODx a Content Management System (CMS for short). It's also a pretty schwanky Application Framework. A robust and flexible API and an event override system makes building engaging web projects and changing core functionality without hacking its code! a breeze.
Not only does MODx help you build sites fast, but it also hides its tremendous power unless it's needed. As far as end users know, MODx is just an easy-to-use CMS with tons of freely available resources and one heck of an end user community.