Hipikat looks like an
interesting Eclipse plugin. It's a research project that provides
pervasive search of your "software artifcats"...documentation, bug notes,
news group posts. Check out the
senarios
for examples of its use. It's a research project and obviously a little
flaky, but the ideas are cool.
This reminds me of an idea I had for a searchable and editable
"Developer's Notebook" which would be sort of a rich client interface to a
wiki, with diagramming and documentation generation capabilities. Perhaps
something like that would be a good Eclipse plugin as well.