Approx is a proxy server, written in OCaml, that can be used as an
alternative to apt-proxy or apt-cacher.  I've been using it for about
a month, and I find it faster and more robust than apt-proxy.

You can find the source and a Debian binary package at
    http://www.cs.cmu.edu/~ecc/software.html

(If any Debian gurus have suggestions on whether/how to announce this
to the broader Debian community, please contact me off-list.)

-- 
Eric C. Cooper          e c c @ c m u . e d u