This module provides a flexible framework for building a megamenu. Unlike most other Megamenu modules this one does not attempt to generate a finished menu, which can then be difficult to customize. Instead it provides the bones of a megamenu with almost no styling, making it easy to customize.
If you're looking for a plug and play solution, this is not the module for you. But if you're looking for an easy way to roll your own with full styling flexibility, this is what you're looking for.