1. Yii

Yii is a free, open-source Web application development framework written in PHP5 that promotes clean, DRY design and encourages rapid development. It works to streamline your application development and helps to ensure an extremely efficient, extensible, and maintainable end product.

2. CodegIniter

CodeIgniter is a powerful PHP framework with a very small footprint, built for PHP coders who need a simple and elegant toolkit to create full-featured web applications. If you’re a developer who lives in the real world of shared hosting accounts and clients with deadlines, and if you’re tired of ponderously large and thoroughly undocumented frameworks.

3. Cakephp

CakePHP is a rapid development framework for PHP that provides an extensible architecture for developing, maintaining, and deploying applications. Using commonly known design patterns like MVC and ORM within the convention over configuration paradigm, CakePHP reduces development costs and helps developers write less code.

4. Akelos

The Akelos PHP Framework is a web application development platform based on the MVC (Model View Controller) design pattern. Based on good practices, it allows you to:

Write views using Ajax easily Control requests and responses through a controller Manage internationalized applications Communicate models and the database using simple conventions.

5. PHPDevShell

PHPDevShell is an Open Source (GNU/LGPL) Rapid Application Development framework written using only PHP with no Javascript and comes with a complete GUI admin interface. It is aimed at developing admin based applications as plugins, where speed, security, stability and flexibility are essentials. It is designed to have a very easy learning curve without complicated new terms to learn. The need for a light, fully functional GUI with limitless configuration brought forward PHPDevShell. We strive to keep direction and focus in our development according to our moto.

6. Symfony

Symfony is a web application framework for PHP5 projects.It aims to speed up the creation and maintenance of web applications, and to replace the repetitive coding tasks by power, control and pleasure.The very small number of prerequisites make symfony easy to install on any configuration; you just need Unix or Windows with a web server and PHP 5 installed. It is compatible with almost every database system. In addition, it has a very small overhead, so the benefits of the framework don’t come at the cost of an increase of hosting costs.Using symfony is so natural and easy for people used to PHP and the design patterns of Internet applications that the learning curve is reduced to less than a day. The clean design and code readability will keep your delays short. Developers can apply agile development principles (such as DRY, KISS or the XP philosophy) and focus on applicative logic without losing time to write endless XML configuration files.

7. Zend

Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications & web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, Flickr, as well as API providers and catalogers like StrikeIron and ProgrammableWeb.

8. Prado

PRADO is a component-based and event-driven programming framework for developing Web applications in PHP 5. PRADO stands for PHP Rapid Application Development Object-oriented.

9. ZooP

The Zoop Object Oriented Php Framework (The Zoop PHP Framework for short). A framework written in and for php.The Zoop PHP Framework is stable, scalable and portable. It has been in production use for the last 5 years and has been used in many production environments. The Zoop PHP Framework is designed to be fast, efficient and clean. It is easily extendable and you choose to include only the functionality you use.With Zoop an inexperienced coder can make secure web applications quickly. A more experienced coder will really appreciate how flexible The Zoop PHP Framework is. Both experienced and inexperienced coders alike will appreciate the automations that are at his/her disposal to handle mundane tasks.The Zoop PHP Framework encourages separation of display, logic and data layers(MVC).

10. Recess Framework

ecess is a RESTful PHP framework that provides a fun and enjoyable development experience for beginner and seasoned developers alike. If you want a full featured RESTful web application without having to master the command line or learn complicated deployment recipes, Recess is for you. Recess is fast, light-weight, and has a very small footprint—ideal for LAMP development and drag-and-drop deployment to shared hosts. Recess is a modern framework that uses a loosely-coupled Model-View-Controller architecture designed and optimized specifically for PHP 5.

11. Vork

To state it simply, Vork is the PHP framework that delivers the greatest IT ROI. Vork provides a maximum-performance platform that is optimized for scaling to serve enormous traffic with minimal server resources. Vork is the easiest to learn and most-intuitive to use and develop on of any PHP framework available today, thus maximizing development pace and ROI from your human-resources.

12. Simple PHP Framework

The Simple PHP Framework is a pragmatic approach to building websites with PHP 5. It’s geared towards web design shops and freelance programmers looking for a common foundation to quickly bring web projects to life.

 13. Fat Free

Condensed in a single 55KB file, the framework’s simple domain-specific language gives you access to Fat-Free’s all-purpose template engine, flexible cache, automatic spam protection, integrated unit testing tools, and code profiler. It’s so small and fast – it even has a bandwidth throttle for controlling Web server traffic. It’s also the only framework that shields you from bandwidth theft and Denial-of-Service (DoS) attacks.

14. Flourish

Flourish is a PHP unframework — a general-purpose, object-oriented library.It has a modular architecture, meaning it isn’t strictly MVC. It focuses on being secure, well documented and easy to use, while solving problems intrinsic to web development.

15. Tekuna

Tekuna is an application container and framework for PHP applications. It provides a stable basis and a generic infrastructure for your projects. Tekuna has a small footprint and will not pollute your codebase with unnecessary stuff. Tekuna provides for PHP what Servlets, XWork and Spring (partially) provide for Java.

16. Kontruckt

Konstrukt is a very light weight PHP framework with the following key aspects: Controllers are resources. URI-to-controller-mapping gives your application a logical structure. Routing based on logic rather than rules. Nested controllers supports composite view rendering.

17. Adorit

Adroit is a lightweight PHP 5 MVC framework that is geared towards helping you develop faster. The main motivation behind Adroit is to keep it simple, but provide useful features that developers want. Whether you’re just beginning web-application development, or a seasoned veteran, Adroit can help make that experience better.

1. jQTouch

A jQuery plugin for mobile web development on the iPhone, Android, iPod Touch, and other forward-thinking devices.

2. iWebKit

iWebKit is a file package designed to help you create your own iPhone, iPod Touch and iPad compatible website or webapp.

3. Sencha Touch

Sencha Touch allows you to develop mobile web apps that look and feel native on iPhone, Android, and BlackBerry touch devices.

4. The-M-Project – HTML5 Javascript Framework

The-M-Project is an HTML5 Javascript framework for writing cross-platform mobile apps.

5. jQuery Mobile

A unified, HTML5-based user interface system for all popular mobile device platforms, built on the rock-solid jQuery and jQuery UI foundation. Its lightweight code is built with progressive enhancement, and has a flexible, easily theme able design.

6. Wijmo – jQuery UI Widgets

Wijmo is a complete kit of over 30 UI widgets with everything from interactive menus to rich charts. If you know jQuery, you know Wijmo. Complete with documentation and professional support, every widget is hand-crafted and includes premium themes.

7. DHTMLX Touch

DHTMLX Touch is a free HTML5-based JavaScript library for building cross-platform mobile web apps. It’s not just a set of UI widgets, but a complete framework that allows you to create eye-catching, robust web applications for mobile and touch devices.

8. LimeJS

is a HTML5 game framework for building fast, native-experience games for all modern touchscreens and
desktop browsers.

9. jQuery Form Framework – jFormer

jFormer is a form framework written on top of jQuery that allows you to quickly generate beautiful, standards compliant forms. Leveraging the latest techniques in web design.

10. Mobl

mobl is a new free and open source language designed specially to speed up building mobile applications. Using modern HTML5 technologies.

11. 960 Grid on jQuery-Mobile

Is a port of 960 Grid to jQuery mobile. It combines the flexibility of 960.gs with the ease of jQuery mobile, with the purpose of making jQuery mobile more flexible and easier to use on mobile and touch-screen devices.

12. Not Just A Grid – Flexible and Modular CSS Framework

Not Just a Grid is a flexible and modular css framework that is designed to assist in the rapid prototyping and development of websites. It has been designed for the future with larger screen sizes and the use of CSS3 for progressive enhancement and richer user experiences.

13. Galleria – JavaScript Image Gallery Framework

Galleria is a JavaScript image gallery framework built on top of the jQuery library. The aim is to simplify the process of creating professional image galleries for the web and mobile devices.

14. Zepto.js (beta)

Zepto.js is a minimalist JavaScript framework for mobile WebKit browsers, with a jQuery-compatible syntax.

15. Gury – HTML5 Canvas Utility Library

gury (pronounced “jury”) is a JavaScript library designed to aid in the creation of HTML5/Canvas applications by providing an easy-to-use chain based interface.With gury you can create a canvas tag, resize and style it, add renderable objects, animate those objects, and place it anywhere on the page in a single chained expression.

16. SproutCore – HTML5 Application Framework

SproutCore is an open-source framework for building blazingly fast, innovative user experiences on the web.

17.  MooModel

MooModel is a javascript framework built on top of mootools, to simplify the use of objects and classes in javascript. It comes with an elegant syntax and built in support for object oriented features. Additionally it provides observable attributes, ActiveModel like validations and a REST persistence adapter.

18. Initializr – HTML5 Templates Generator

Initializr is an HTML5 templates generator created by Jonathan Verrecchia to help you getting started with a new web project based on HTML5 Boilerplate. Initializr will generate for you a clean customizable template with just what you need to start!

19. Amplify

AmplifyJS is a set of components designed to solve common web application problems with a simplistic API. Amplify’s goal is to simplify all forms of data handling by providing a unified API for various data sources. Amplify’s store component handles persistent client-side storage, using standards like localStorage and sessionStorage, but falling back on non-standard implementations for older browsers. Amplify’s request adds some additional features to jQuery’s ajax method while abstracting away the underlying data source.

Note: In order to install a Genesis Child Theme, you have to purchase the Th Genesis Theme (from which this child theme inherits all of the functionality), upload both themes to your server in the themes folder and then activate the child Theme.

You may also be interested in one of these older posts
Awesome And Free Fonts For Web Designers
13 Magnificent Free WordPress Portfolio Themes
13 Free Professional Looking WordPress Magazine Style/CMS Themes
25 Essential Tutorials And Resources For Learning CSS3

1. Persevero

Demo | Download

2. Charisma

Demo | Download

3. Georgia

Demo | Download

4. Birow

Demo | Download

5. Inzornade

Demo | Download

Below is a roundup of the various CSS frameworks out there and a short description from the authors of each framework.

960 Framework
The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.

Blueprint CSS Framework (My Favorite)
Blueprint is a CSS framework, which aims to cut down on your CSS development time. It gives you a solid CSS foundation to build your project on top of, with an easy-to-use grid, sensible typography, and even a stylesheet for printing.

Elements CSS Frameworks
Elements is a down to earth CSS framework. It was built to help designers write CSS faster and more efficient. Elements goes beyond being just a framework, it’s its own project workflow.It has everything you need to complete your project, which makes you and your clients happy.

CwS CSS Framework
If you’ve been creating sites with CSS for a while you may be getting frustrated with having to recreate and retest basic layouts on a regular basis. In this article I’m trying to illustrate a simple way of skipping the tedious startup on your average project, letting you get to the interesting stuff as quickly and efficiently as possible. I’ve not attempted to explain the layouts included here so it may not be suitable if you’re a CSS beginner. Sorry about that… Feel free to dissect them yourself if you’re interested; I’ve kept them as simple as possible.

YAML CSS Framework
Yet Another Multicolumn Layout (YAML) is an (X)HTML/CSS framework for creating modern and flexible floated layouts. The structure is extremely versatile in its programming and absolutely accessible for end users.

YUI Grids CSS (i like this too)
The foundational YUI Grids CSS offers four preset page widths, six preset templates, and the ability to stack and nest subdivided regions of two, three, or four columns. The 4kb file provides over 1000 page layout combinations.

Boilerplate CSS Framework
As one of the original authors of Blueprint CSS I’ve decided to re-factor my ideas into a stripped down framework which provides the bare essentials to begin any project. This framework will be lite and strive not to suggest un-semantic naming conventions. You’re the designer and your craft is important.

CleverCSS
CleverCSS is a small markup language for CSS inspired by Python that can be used to build a style sheet in a clean and structured way. In many ways it’s cleaner and more powerful than CSS2 is. The most obvious difference to CSS is the syntax: it is indentation based and not flat. While this is obviously against the Python Zen, it’s nonetheless a good idea for structural styles.

WYMstyle: a CSS framework
Description from WYMstyle: WYMstyle is a set of CSS files, that you can easily combine to very quickly create the layout of your web sites. WYMstyle aims to suppress the tedious compatibility testing across browsers for each created website, by providing CSS modules which are reliable and well-tested.

Sandbox (ScottWallick)
The Sandbox is a powerful tool available for WordPress theme designers and developers. The Sandbox can be easily designed just with CSS, so beginners will feel comfortable not bothering with PHP.Rich with powerful and dynamic semantic class selectors, Sandbox is a canvas for CSS artists.

Hybrid (Justin Tadlock)
Hybrid is a WordPress theme framework designed with content in mind. There is no other theme that will display your content in a meaningful way like this one does. It’s all about getting your information out there to the world. Without all the fuss. That’s what Hybrid does.

Thematic
A highly extensible, search-engine optimized WordPress Theme Framework featuring 13 widget-ready areas, grid-based layout samples, styling for popular plugins and more.
The coding, functionality and support rivals the best in “premium” themes. With one, important, difference—Thematic is completely free and open source.

Wp Framework
WP Framework is a powerful WordPress Theme Framework that aides WordPress Theme Authors to perform rapid theme prototyping. WP Framework handles all the essentials while you focus on your theme’s specific features.

To learn more about how you can take advantage of this amazing Framework, visit the website for more information http://wpframework.com.