Composite C1 - CMS on .NET 4 platform
C1 is aimed at communicators who need to easily manage content on corporate websites while maintaining a consistent visual identity. C1 comes fully featured, it's straightforward to use, easy to extend, and integrates with other systems beautifully.
It has ability to store the content in SQL database and XML flat file. It uses XSLT to transform XML to content and XSLT developers could provide a great look and feel to the site without doing much programming. It supports all features of CMS like content reuse, Page preview, SEO friendly, WYSIWYG editor, Image editor, Media archive etc.
It is a web based CMS. It supports wizards to create and configure the sites. User doesn't require any other console to manage their sites. It supports structured content and provides page based view.
The most important feature is to Edit a page instantly while browsing your website. It has complete localization support. Users could easily localize websites to different audicense.
Functions: C1 function is another important feature. It helps to encapsulate the behaviour and provides support to reuse the content, Dyanamic content rendering and Integration. 4 types of functions could be created. Visual function, XSLT function, C# function and SQL function.
Dual License: It supports opensource and commerical license. Both are functionally same.
Source code location: http://compositec1.codeplex.com/