Open Source Alternatives to

Comodo Firewall

1 Alternative

Portmaster

Ultimate Privacy Firewall Solution

Cybersecurity

Portmaster: Open-source app firewall for privacy.

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Read more about Portmaster

Portmaster is a free and open-source application firewall designed to give you full control over your computer's network activity. It helps you restore privacy and protects against unwanted surveillance by monitoring and blocking malicious connections at the system level.

•Monitor All Network Activity: Discover everything happening on your computer. Expose every connection your applications make and detect malicious ones.

•Auto-Block Trackers System-Wide: Protect your entire computer, not just your browser. Block advertisements and trackers for all applications with customizable rules.

•Set Global & per-App Settings: Create your own rules. Completely cut off applications from the Internet, block all P2P connections except for specific apps, or prevent connections to specific countries.

Portmaster is powerful, user-friendly, and completely free and open-source, making it an essential tool for anyone concerned about their digital privacy.