Typesetter (formerly gpEasy) is an open source CMS written in PHP focused on ease of use with true WYSIWYG editing and flat-file storage.
Many available extensions or plugins available. Custom programming may not be necessary.
User-friendly and easy to use, and offers easy management of content and data, with a minimal learning curve. No prommaning knowledge is necessary.
Has a larger active community. Support is always available for free or as a paid service. Excellent documentation available.