ZoneAlarm Free Firewall Alternatives

Little Snitch is a firewall application that monitors and controls outbound internet traffic.

Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.

Lightweight and non-intrusive firewall

Visualize network activity in detail, get notified when new apps access the network, look out for...

Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on...

Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses /...

NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.

OpenSnitch is a GNU/Linux port of the Little Snitch application firewall.

Windows Firewall Notifier (WFN) extends the default Windows embedded firewall behavior, allowing to...

PC Tools Firewall Plus Free Edition is a powerful personal free firewall for Microsoft Windows that protects your computer from hackers and intruders. Firewalls

Gufw is an easy, intuitive way to manage your Linux firewall.

LuLu is the free open-source macOS firewall that aims to block unauthorized (outgoing) network...

Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.