Contao is a German-engineered open-source platform that provides a stable, user-friendly environment on which we can build almost anithing you may requre.
Simple Contao modules can be built within a day or two. Let us know about your ideas. Maybe we have already built something similar or there is module already built which require only some modification for your need.
Are you considering an advanced custom website and/or application?
Maybe a CMS is not powerful or has too much overhead for your liking? Then a framework project might just be for you.
Customizing a "new" CMS based on an open source CMS framework can bridge the gap between a pure open source CMS product and a commercial CMS.
Supporting Contao CMS from its early days.