What a coincidence. Tom and I were just discussing his (never-ending) search for a better approach to personal knowledge management. We specifically talked about Personal Brain, which is a tool he tried a while back and abandoned, just like McGee
. Maybe one of the two tools McGee mentions in this post will get him closer to pKM nirvanna. (Neither are open source).

Tom has had some recent success with TiddlyWikki, which is a “reusable non-linear personal web notebook” that runs locally and requires no server.