CacheGuard-OS - CacheGuard is an enterprise grade Web Gateway solution offering Web Security & Optimization in the same box. Price starting at $99 per Year!
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
PC Tools Firewall Plus - PC Tools Firewall Plus Free Edition is a powerful personal free firewall for Microsoft Windows that protects your computer from hackers and intruders. Firewalls
ZoneAlarm Free Firewall - Personal Firewall software
Gufw - Gufw is an easy, intuitive way to manage your Linux firewall.
Comodo Firewall - Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses /...