Zen Foundation delivers attractive and easy-to-use collaboration for non-technical online communities. With strong branding and graphic design, Zen puts rich presentation options and content design widgets at your fingertips. Plus, Zen’s multi-page draft/preview and publication features gives new users the safety and freedom to experiment, while improving the quality of published content.
I saw an early version of Zen last year at Summit and was blown away by how clean and intuitive the product was. It really does allow you to have complete control over the way Confluence is skinned which is excellent for customized branding.