Avast - Avast security software products are developed for Microsoft Windows, Mac OS X, Android and Linux users by AVAST Software.
TinyWall - Lightweight and non-intrusive firewall
Comodo - Comodo, the leading Internet Security Provider offers Free Antivirus, SSL Certificate and other Internet Security related products with complete protection
SonicWall - SonicWall security solutions protects your network, systems, users and data from cyber threats.
Windows Defender - Windows 10 security delivers built-in & ongoing protections you can trust: Windows Defender Antivirus, firewall, family settings, ransomware protection, real-time protection & more. Stay up to date & protected at no extra cost.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more