WikyBlog is a Wiki/Blog CMS/Groupware application with an AJAX enhanced tabbed interface enabling users to view/edit multiple files within the same page. It is designed to be scalable and by default has multiple data types: normal wiki pages, comments, templates, and Google Maps.
Read more about WikyBlog's features at http://www.wikyblog.com/Help/en/WikyBlog/Features
Compare with other packages http://www.weblogmatrix.org/compare/WikyBlog+Jlog+Wheatblog+Loudblog