The simply the best collection of frameworks
Seed-PHP is a microframework that offers you a really simple way to implement powerful RESTful APIs or even simple web sites that could support pretty much all needed methods and responses in JSON or XML formats.
A JavaScript library that detects HTML5 and CSS3 features in the users browser. It creates a JavaScript object with the results, and adds classes to the html element for you to key your CSS on.
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.
An advanced responsive frontend framework. Customize your build using SASS to include/remove certain elements, as well as define the size of columns, colors, font size and more. Include plugins and get add-ons, templates and more.
Luya is a scalable web framework and content management system. It provides an integrated deployment process that lets you publish your projects to different stages and servers. Needs composer and uses the Yii 2 PHP Framework.
A JavaScript tooltip framework that is free, open source and comes with different styles. Opentips can automatically download their contents via AJAX. Position the tooltip exactly where you want it.
Fully featured HTML Framework for building iOS and Android apps.
A set of small, responsive CSS modules that you can use in every web project. Crafted with mobile devices in mind. Responsive out of the box, so elements look great on all screen sizes. Customize your styles with the Skin Builder to make your style your own. Plays well with other libraries including Bootstrap and jQuery.
A toolset for building the framework most suited to your application development. Fully extensible and works well with other libraries.
A composite application library for Backbone.js that aims to simplify the construction of large scale JavaScript applications. It is a collection of common design and implementation patterns found in applications.