Is there a particular Document Management System that you recommend or works best with Libre Office?
We use (and sell) Group-Office groupware which is web based. It sends the LibreOffice document to the local computer with Java - and after editing locally it automatically uploads it to the server.
You can use template documents, so your LibreOffice document will automatically be populated with data from contacts, projects etc.
It has file versioning, check in/out of documents and a very nice ACL system for permission control.
The community version is AGPL, but you will need the Professional version (paid) for the functionality above.