   [web] Looking for a good portal technology
  The company that I work for is looking for a good portal technology that we can utilize for our internal communications such as forums, articles, book reviews and blogs. Personally I love the look and feel of GameDev.net but I believe that it is proprietery technology. Does anyone know of or recommend any open source portal framework similar in functionality to GameDev.net?Bonus points if the user store can support Active Directory.   