GRCs DNS Benchmark - DNS Nameserver Performance Benchmark
Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).
Public DNS Server Tool - Public DNS Server Tool is a small utility for changing the DNS servers in Windows XP, Vista, 7 and...
ExaProxy - ExaProxy is a a high-performance non-caching proxy.
namebench - Provides personalized DNS server recommendations based on your browsing history.
Squid Proxy - Website Content Acceleration and Distribution. Thousands of web-sites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients.