This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
did you consider a complete portal solution? There are few OSS with its Enterprise support (e.g. Liferay, eXo platorm, etc. , but I'm not sure if they can provide an on site installation), but if you need a heavilly supported product, what about IBM Portal Express? (for its price, of course)