cfengine
http://www.gnu.org/software/cfengine
Squid:
http://www.squid-cache.org
autorpm:
http://www.kaybee.org/~kirk/html/linux.html
lbnamed:
http://www.stanford.edu/~riepel/lbnamed
Proxy Auto-Configuration:
http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/proxy-live.html
Sharp “Super Proxy” Script:
http://naragw.sharp.co.jp/sps/index.html
Calamaris Squid Reporting Tool:
http://cord.de/tools/squid/calamaris