Varnish Cacheis a webapplicationacceleratoralso known as acaching HTTPreverse proxy.You install itin front of anyserver thatspeaks HTTP andconfigure it tocache thecontents.Varnish Cacheis really,really fast. Ittypicallyspeeds updelivery with afactor of 300 -1000x,depending onyourarchitecture.
Dante is a freeimplementationof the proxyprotocols SOCKSversion 4 andSOCKS version 5(RFC 1928) thatsupports bothIPv4 and IPv6.It can be usedas a firewallbetweennetworks and tocontroloutgoing orincomingtraffic. Thepackageconsists of twoparts: a SOCKSserver and aproxy clientthat supportsSOCKS, HTTPproxies, andUPnP. RFC 1961(GSSAPI) issupported inboth the clientand the server.Commercialsupport isavailable.
Burd'sProxy Searcheris a WindowsGUI to easilyuncover publicand free-to-useor anonymizingproxy servers.It's basedon acustomizableand filterablesearch engine,andautomaticallyprobes resultlists forserveraccessibility.It can test forHTTP or SOCKSproxies, andinstantly applysettings to thecurrent webbrowser.