MODx

MODx is a professional tool of working out of the sites, allowing to operate a content, and a site absolutely on all of 100 %! This system with an open code (open source), and therefore is free. Unlike the majority free CMS (English Content Management System - a control system of a site) — on MODx you can construct a site of any complexity, practically with any set of functions, thus the system will not influence by no means your html-code.