Open Source Web Application
Does anyone know an open source web application (with either Java or PHP languages) that has the following features:

administration User Management
Sign up 
Dynamic News on the home page
forum

If you know one, but with some above features, please tell me.

Best
Open Source Web Application
===

Does anyone know an open source web application (with either Java or PHP languages) that has the following features:

administration User Management
Sign up 
Dynamic News on the home page
forum

If you know one, but with some above features, please tell me.

Best