BootMetro framework is a small, simple and flexible for creating web applications, emulating the graphic interface called Metro as is Windows 8.
The project is completely open source, this can be seen perfectly in its section on Github where you can download the source code ready to be implemented, or modify it to suit with full flexibility to our project.
The framework is extremely comprehensive, and can be found: styles for tables, menus, lists, icons typography, layouts, and much more.
Personally this projects seem very useful but must be used with caution. It gives more focus to your content, With a Metro style app you give users immediately focus on the primary infos, increasing the usability and reducing the distractions.