I'll report on the Motu
project here. I discovered it while searching for open source TreeMap projects. Found one here
, and it's used in the Motu project. Here's what the Motu site says (I wish the blockquote tag would work):
"The Motu system allows a virtual team to share data supporting in the mean time awareness. It appears to be a tool such as BSCW, TeamScope or SourceForge. It includes an awareness system within a shared data manager. The Motu system distinguish itself with its richer awareness system as a sharper and a more active detection of users activity, indeed users are informed live. "
The project is an old one (7 years), implying it's not all that up to date, possibly dead now. But, I think that it's worth browsing such projects, perhaps collecting, say, a spreadsheet of existing projects from which to craft a matrix of capabilities to juxtapose with a needs matrix.
Meanwhile, TreeMap and its sister HyperTree
(both Java, MIT license), are of interest to sensemaking portals that would display data.