Igenko is an open source CMS and eCommerce solution, natively designed with REST principles, extensibility and Rich Internet Application in mind.
It is based on Java Content Repository, Spring, Flex, GraniteDS and PureMVC technologies.
Silva is a powerful CMS for organizations that manage complex websites. Content is stored in clean and futureproof XML, independent of layout and presentation. Features include versioning, workflow system, integral visual editor (Kupu), content reuse, sophisticated access control, multi-site management, extensive import/export facilities, fine-grained templating, and hi-res image storage and manipulation.
Hippo CMS is an open source information centered content management system. It's targeted at medium to large organisations managing content for multi-channel distribution like web sites and intranets. It facilitates an open and flexible way of using your information by following international accepted open standards.
It is a content management system inspired by Ward Cunningham's Wiki idea. Whereas most wiki implementations (and there are hundreds) use a textarea in a web page for editing, with a command language for formatting, Cozmos uses a full installed 'Thick' application for editing and pushes back the pages using an extended web technology called WebDAV. Like Wikis, Cozmos separates content from presentation/style. Unlike Wikis the actual language of the content is HTML which is the language of the web itself.