I've got an old copy of Jim Hefferon's excellent catalogue search from www.ctan.org; it's been off the air for a bit, but is now available again at http://www.tex.ac.uk/CTANfind.html

Does what you need, I think, though it's undoubtedly less pretty than Jim's current thing (which is on a machine that's currently not working...).

Robin Fairbairns

For the CTAN team