IMHO I don't think we lack knowledge capture and retrieval tools as much as we lack integration between those tools. I use Zim as a desktop wiki and todo list

IMHO I don't think we lack knowledge capture and retrieval tools as much as we lack integration between those tools. I use Zim as a desktop wiki and todo list tool, Freemind as a mind mapper, TaskJuggler 3 as a project planning tool and Zotereo as a reference capture tool - and they are all very good at what they do but they just don't work together very well. A high level of integration between tools like this would be the killer app in this space. I have hopes that Camlistore would be part of this solution.