Amaze UI is a modular mobile-first front-end framework.
An open source HTML/CSS framework for prototyping native phone/tablet applications.
NativeCSS Studio is a library and cloud service that enables developers to style their native apps in CSS without restarting or requiring your users to update from the app store.
Build mobile apps with simple HTML, CSS, and JS components.
jQuery Mobile is a HTML5-based user interface system designed to make responsive web sites and apps that are accessible on all smartphone, tablet and desktop devices.