Work by Concrete 5

Concrete 5

Concrete5 is an open source content management system (CMS) for publishing content on the World Wide Web and intranets..
It enables users to edit site content directly from the page. This makes the platform easy to use with a minimum of technical skills. This feature, combined with a version management for every page, are typical of wiki software, another type of web site development software. concrete5 allows users to edit images through an embedded editor on the page.

http://www.concrete5.org/