pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
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.
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
Privoxy - Privoxy helps users to protect their privacy.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
Artica Proxy - Artica Proxy is an appliance that claim to manage Squid-cache proxy with all features that Squid...