Symantec Email Security.cloud - Symantec Email Security.cloud provides always-on, inbound and outbound email security against malware, targeted attacks, and advanced threats
E2Guardian - Web filtering solution
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
CacheGuard-OS - CacheGuard is an enterprise grade Web Gateway solution offering Web Security & Optimization in the same box. Price starting at $99 per Year!
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.