Also, see Wordpress[0][2] and Vanilla Forums[1][3]. They both offer an open source version that you can download and self-host, and a commercial offering which

Also, see Wordpress[0][2] and Vanilla Forums[1][3]. They both offer an open source version that you can download and self-host, and a commercial offering which they host and you can customize through a limited set of themes and plugins. Open source, community edition: [0] http://wordpress.org/ http://wordpress.org/ [1] http://vanillaforums.org/ http://vanillaforums.org/ Hosted version with customization via themes and plugins: [2] https://wordpress.com/ https://wordpress.com/ [3] http://vanillaforums.com/ http://vanillaforums.com/