Respond is an open source, responsive content management system that you can use to build responsive sites. Respond 2.2 features a REST API, a lightning-fast Knockout-based UI, Bootstrap 3.0, and an enhanced data layer using PDO. In the latest release, we have cleaned up the UI for our editor and improved support for tabular data. Respond 2.2 is faster, more secure, and more beautiful than ever.
Learn more about Respond CMS at: http://respondcms.com
View our documentation at: http://respondcms.com/page/documentation
Our current version is 2.2.
See whats new in the Ocutober 2013 update: http://respondcms.com/update/october-2013