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.
TurboHide - TurboHide keeps you anonymous from sites that you visit and allows you to bypass any firewall restrictions from your school, college, workplace or home.
Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).
CroxyProxy - CroxyProxy is the most advanced free and secure web proxy.
AdGuard - Surf the Web Ad-Free and Safely. Shield up!
Tor Browser - Tor is free software for enabling anonymous communication.