Stephen Reed is doing some interesting research at texai.org. This project is interesting to me because there is a lot of overlap with my own KBSportal.com project (which I am currently re-writing in Ruby and Ruby on Rails: the first two versions were in Common Lisp and Java): RDF, Sesame, knowledge representation, and NLP.

For me, working on KBSportal.com has been a learning process, and I think that texai also serves that purpose for Stephen.