The Best 39 ZoneAlarm Free Firewall Alternatives

  • Comodo Firewall icon

    Comodo Firewall

    Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses / malicious software and external attacks by hackers.

    Free Windows

  • Little Snitch icon

    Little Snitch

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

    Commercial

  • TinyWall icon

    TinyWall

    TinyWall is a free software to harden and control the advanced firewall built into Windows Vista, Windows 7 and Windows 8.

    Free Windows

  • Gufw icon

    Gufw

    Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).

    Free Open Source Linux

  • Windows 10 Firewall Control icon

    Windows 10 Firewall Control

    Protects your applications from undesirable network incoming and outgoing activity, controls applications internet access. Allows you to control personal information leakage via controlling application network traffic.

    Freemium Windows

  • Privatefirewall icon

    Privatefirewall

    This personal firewall and intrusion detection application provides comprehensive online security. It constantly monitors your PC for intrusion and reports any findings, so you can take the appropriate action.

    Free Windows

  • Radio Silence icon

    Radio Silence

    Radio Silence lets you block individual apps from accessing the internet. It never throws pop-ups on the screen, and is completely invisible.

    Commercial Mac OS X

  • PC Tools Firewall Plus icon

    PC Tools Firewall Plus

    PC Tools Firewall Plus is a powerful free personal firewall for Windows® that protects your computer by preventing unauthorized users from gaining access to your computer through the Internet or a network.

    Free Windows

  • Hands Off! icon

    Hands Off!

    Hands Off! is an application to monitor and control the access of applications to your network and disks.

    Commercial Mac OS X

  • Firestarter icon

    Firestarter

    Firestarter is an Open Source visual firewall program. The software aims to combine ease of use with powerful features, therefore serving both Linux desktop users and system administrators.

    Free Open Source Linux

  • Free Firewall icon

    Free Firewall

    Free firewall is a full-featured professional firewall that protects against the threats of the Internet. Control every program on your computer by permit or deny access to the Internet.

    Free Windows

  • Murus Firewall icon

    Murus Firewall

    Murus is a frontend for the OS X PF network firewall. From basic filtering to advanced proactive options, Murus allows to easily configure a complex network setup dragging and dropping icons and moving sliders and selecting checkboxes.

    Freemium Mac OS X

  • Sygate Personal Firewall icon

    Sygate Personal Firewall

    Sygate Personal Firewall is a bit old but good firewall for Windows. It uses very small amount of system resources and is quite robust.

    Free Windows

  • TripMode icon

    TripMode

    Block internet connection for apps.

    Commercial Mac OS X Windows

  • Rubbernet icon

    Rubbernet

    Rubbernet keeps an eye on all network-enabled apps running on your Mac. It provides real-time monitoring so you can keep an eye on the exact state of your live network connections.

    Freemium Mac OS X

  • NetPeeker icon

    NetPeeker

    Monitor network applications, personal firewall, trace whois, network speed limiter. NetPeeker is a network tool set that combines the functionality of traffic monitoring with the blocking features of a personal firewall.

    Commercial Windows

  • PC Privacy Shield icon

    PC Privacy Shield

    PC Privacy Shield is a security suite with tools to help you minimize your digital footprint on the internet.

    Freemium Windows