Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections. Increase your privacy and security. Get peace of mind.

IPFire is a hardened, versatile, state-of-the-art Open Source firewall based on Linux.

Open source router and firewall platform

pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more