Silverstripe is a free framework and content management system (open source), which can be used to manage a website. CMS to provide silvestripe an ease in managing the website. Each end user does not need to have the ability in the use of HTML. So it is easy to use.
Silverstripe has a development Model View Controller framework called Sapphire. Sapphire written using PHP5 language, with this MVC any website developers can also easily modify the functionality of the web, including with its CMS control panel pages. Silverstripe also provides full control of the HTML page generation, database design, forms, etc. With this control developers can avoid the mistakes typing html syntax, creating databases, forms, etc.
Silverstripe issued with BSD License. For documentation there was an online documentation for users and developers and also the complete guide to silvertripe book was released in August 2009. Silverstripe demo can be viewed through the video or try the demo at http://demo.silverstripe.com/.