A searchable knowledge base where any information important to the project team can be stored, e.g. Best practices,
How to's, Known issues, etc, etc. Keep all your knowledge in one single place! It uses a folder tree structure for easy navigation.
The Knowledge base can also be available in the Support Center and work as a manual/help for your customers.
A discussion forum is a very powerful way to have both colleagues as well as customers discussing different topics. You can choose to make articles internal or to publish to the Support Center. You can also choose who should be able to see the article and make them read-only or editable.