The AI repository at CMU might be one good starting point.
John Connors proposes to revivive the Port module from the CLOCC: it was a small module that provides portable acess to filesystems, threads and sockets. The goal is to test it and update it, if needed, and create an ASDF-installable package that can be used with Lisp In a Box.
I'm all for doing this. My problem with CLOCC was the GPL vs. LLGPL provisions which make it impossible to use port with any system where I need mixed use. I'd champion making port portable and asdf-installable (already have done that on my local system for my academic work) but wonder if there's a way to address the license issues. This is true in general for CLOCC. email@example.com