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3 <chapter id="introduction.overview">
5 <title>Overview</title>
8 Zend Framework is an open source framework for developing web applications and services
9 with <acronym>PHP</acronym> 5. Zend Framework is implemented using 100% object-oriented
10 code. The component structure of Zend Framework is somewhat unique; each component is
11 designed with few dependencies on other components. This loosely coupled architecture allows
12 developers to use components individually. We often call this a "use-at-will" design.
16 While they can be used separately, Zend Framework components in the standard library form a
17 powerful and extensible web application framework when combined. Zend Framework offers a
18 robust, high performance <acronym>MVC</acronym> implementation, a database abstraction that
19 is simple to use, and a forms component that implements <acronym>HTML</acronym> form
20 rendering, validation, and filtering so that developers can consolidate all of these
21 operations using one easy-to-use, object oriented interface. Other components, such as
22 <classname>Zend_Auth</classname> and <classname>Zend_Acl</classname>, provide user
23 authentication and authorization against all common credential stores. Still others
24 implement client libraries to simply access to the most popular web services available.
25 Whatever your application needs are, you're likely to find a Zend Framework component that
26 can be used to dramatically reduce development time with a thoroughly tested foundation.
30 The principal sponsor of the project 'Zend Framework' is <ulink url="http://www.zend.com">
31 Zend Technologies</ulink>, but many companies have contributed components or significant
32 features to the framework. Companies such as Google, Microsoft, and StrikeIron have
33 partnered with Zend to provide interfaces to web services and other technologies that they
34 wish to make available to Zend Framework developers.
38 Zend Framework could not deliver and support all of these features without the help of the
39 vibrant Zend Framework community. Community members, including contributors, make
40 themselves available on <ulink url="http://framework.zend.com/archives">mailing
41 lists</ulink>, <ulink url="http://www.zftalk.com">IRC channels</ulink>, and other
42 forums. Whatever question you have about Zend Framework, the community is always available