Bootstrap Institute. http://www.bootstrap.org/

An organization dedicated to boosting "mankind's collective capability for coping with complex, urgent problems." In late November, 2000 they started development on an open hyperdocument system (OHS) which will fulfill the requirements of a full_hypertext system. "The goal of the OHS Project is to build an open source Open Hyperdocument System (OHS) - the critical missing piece of the technology for enabling dynamic, distributed collective knowledge work."

One idea in use at bootstrap that would be handy to use here is the labelling of paragraphs with in document link tags that can be easily copied for making references to those paragraphs from other documents. That may come along one of these days.