Gridguyz is a content management system, where everything is built up from blocks called paragraphs. Even contents and layouts are paragraphs.
It has easy-to-use drag'n'drop to edit paragraphs' position, and intuitive WYSIWYG to edit paragraphs' contents.
Please see INSTALL.md.
Gridguyz is under Creative Commons Attribution-ShareAlike 3.0 (cc-by-sa-3.0). More info at LICENSE.txt.