Leaf

Leaf lets developers easily build responsive Web projects using the known graphic look of a Material Design application.

The framework was actually written in Stylus and compiled to CSS, and comes with examples, color schemes, its own grid system, support for icon fonts, and some built-in UI components.

These will help developers quickly assemble prototypes for their applications out of the box, and leave other customizations and fine tuning for later in the project's development.

Besides UI widgets, the framework also includes support for the Material Design specific animation sequences, from the wave click animations, drop shadows, and hover effects.

For its grid system, Leaf uses Crow, a multi-functional, and very lightweight Stylus/CSS grid.

Built-in components:
Buttons
Cards
Circles
Dropdowns
Flipcard
Form
Images
List/menu
List/message
List/text
Modal
Notice
Slider
Tabs
Tiles