These all are the set of google  open project codes which all are will help you to build a project easily, try some of them and comment it here if you know anymore.The following set of codes is for web design and development

phpShop

The primary purpose of phpShop is to provide a simple shopping cart solution that is easy to customize to suit any purpose. phpShop has less features that many other shopping cart applications, but is generally easier to customize.

All that is required to effectively customize phpShop is a basic knowledge of HTML, CSS, PHP, and SQL.

Google code : http://code.google.com/p/phpshop/

Minify

Minify is a PHP5 app that helps you follow several of Yahoo!’s

Google code : http://code.google.com/p/minify/

OpenSocial PHP Client Library

Better than french toast! The OpenSocial PHP Client Library enables you to work with OpenSocial data on your server, in the language of your choice

Google code : http://code.google.com/p/opensocial-php-client/

reCAPTCHA

reCaptcha is php class which provides a simplae captcha demo for your site.

Google code : http://code.google.com/p/recaptcha/

Emastic

Emastic is a CSS Framework, it’s continuing mission: to explore a strange new world, to seek out new life and new web spaces, to boldly go where no CSS Framework has gone before.

Google code : http://code.google.com/p/emastic/

Malo

Malo is ultra small css library for building web sites.

It is meant to be structural base for small or medium web sites.

Malo derives from it’s bigger brother Emastic CSS Framework.

Google code : http://code.google.com/p/malo/

Logic CSS framework

Google code : http://code.google.com/p/logicss/

The following is for flash projects

as3corelib

The corelib project is an ActionScript 3 Library that contains a number of classes and utilities for working with ActionScript 3.

These include classes for MD5 and SHA 1 hashing, Image encoders, and JSON serialization as well as general String, Number and Date APIs.

Google code : http://code.google.com/p/as3corelib/

mock-as3

Create flexible mock objects for use when unit testing Flash and Flex projects. Supports method and property mocking with argument constraints, return values, event dispatch, error throwing, and more.

mock-as3 provides an expectation based API, allowing the setting of method and property expectations separate to the invocation of mocked methods.

Google code : http://code.google.com/p/mock-as3/

As3 RPC lib

As3 RPC lib is a set of libraries that can be used with Flex 2 or AS 3 to invoke remote procedure calls using:

• AMF0 (Flash Remoting MX)
• XML-RPC
• JSON-RPC (Coming Soon)

Usage mimics the RemoteObject which is available natively in Flex 2 in an effort to make usage in existing frameworks (e.g. Cairngorm) and design pattern (e.g. Token pattern) easy as possible.

Google code : http://code.google.com/p/as3-rpclib/

It is meant as an architectural and mathematical reference for developers interested in physics simulation in the area of game development or otherwise. It trades efficiency for modularity and extensibility.

Google code : http://code.google.com/p/foam-as3/

Tweener

Tweener (caurina.transitions.Tweener) is a Class used to create tweenings and other transitions via ActionScript code for projects built on the Flash platform

Google code : http://code.google.com/p/tweener/