Pep
Pep, a lightweight jQuery plugin for kinetic drag on mobile/desktop
Ratchet
Prototype iPhone apps with simple HTML, CSS, and JS components.
Foo Table
jQuery plugin to make HTML tables responsive
Onsen Ui
Custom Elements-Based HTML5 UI Framework for Building Your Mobile Front End
Brick
UI Web Components for Mobile Web Apps
Ionic
Advanced HTML5 Mobile App Framework. A beautiful front-end framework for developing hybrid mobile apps in HTML5. Best friends with AngularJS.