rq2proxy is currently supported by Richard.Watts@cl.cam.ac.uk. It has a home page at http://epona.ucam.org/rrw/qproxy.html, from which the latest version is always available.
There is also an electronic mailing list. To subscribe, send a human-readable e-mail to Richard.Watts@cl.cam.ac.uk with the phrase `Subscribe rq2proxy' in the subject line.