Compare the Top Firewall Software for Windows as of November 2025

What is Firewall Software for Windows?

Firewall software is a security tool that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Acting as a barrier between a trusted internal network and untrusted external networks, firewalls help prevent unauthorized access and protect against cyber threats. They work by analyzing data packets and determining whether they should be allowed through based on set policies, blocking potentially harmful traffic. Modern firewalls often incorporate advanced features like intrusion prevention, application filtering, and deep packet inspection to strengthen security further. By providing this critical layer of protection, firewall software safeguards sensitive data and ensures the integrity of networked systems. Compare and read user reviews of the best Firewall software for Windows currently available using the table below. This list is updated regularly.

  • 1
    ThreatLocker

    ThreatLocker

    ThreatLocker

    The ThreatLocker suite of security tools are powerful and designed so that everyone from businesses to government agencies to academic institutions can directly control exactly what applications run on their networks. We envision a future in which all organizations can chart their own course free from the influence of cybercriminals and the damage their incursions cause, and our team of veteran cybersecurity professionals created ThreatLocker to make this vision a reality. The team at ThreatLocker has been developing cybersecurity tools for decades, including programs to enhance email and content security, and this is our most innovative and ambitious cybersecurity solution yet. We developed this unique cybersecurity system because we believe that organizations should have complete control of their networks and should not have to live in fear of the next malware attack. To learn more, visit ThreatLocker.com.
    Leader badge
    Partner badge
    View Software
    Visit Website
  • 2
    Heimdal Endpoint Detection and Response (EDR)
    Heimdal® Endpoint Detection and Response is our proprietary multi-solution service providing unique prevention, threat-hunting, and remediation capabilities. It combines some of the most advanced threat-hunting technologies: - Next-Gen Antivirus - Privileged Access Management - Application Control - Ransomware Encryption Protection - Patch & Asset Management - Email Security - Remote Desktop - Threat Prevention ( DNS based ) - Threat Hunting & Action Center With 9 modules working together seamlessly under one convenient roof, all within one agent and one platform, Heimdal Endpoint Detection and Response grants you access to all the essential cybersecurity layers your business needs to protect itself against both known and unknown online and insider threats. Our state-of-the-art product empowers you to quickly and effortlessly respond to sophisticated malware with stunning accuracy, protecting your digital assets and your reputation in the process as well.
    Leader badge
    Starting Price: $0/month
  • 3
    FortiClient

    FortiClient

    Fortinet

    Multilayered endpoint security with behavior based analysis for prevention against known and unknown threats. Complete real-time visibility of all your global software inventory. Here, there, anywhere. Cloud-delivered FortiClient endpoint protection service designed for small and medium-sized business. Integrated endpoint protection platform that provides automated next-generation threat protection, visibility and control of your software and hardware inventory across the entire security fabric. Identify & remediate vulnerable or compromised hosts across your attack surface. As a key piece of the Fortinet Security Fabric, FortiClient integrates endpoints into the fabric for early detection and prevention of advanced threats. Security events including zero-day malware, botnet detections, and vulnerabilities are reported in real-time.
  • 4
    Fortinet

    Fortinet

    Fortinet

    Fortinet is a global leader in cybersecurity solutions, known for its comprehensive and integrated approach to safeguarding digital networks, devices, and applications. Founded in 2000, Fortinet provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. At the core of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly integrates security tools to deliver visibility, automation, and real-time threat intelligence across the entire network. Trusted by businesses, governments, and service providers worldwide, Fortinet emphasizes innovation, scalability, and performance, ensuring robust defense against evolving cyber threats while supporting digital transformation and business continuity.
  • 5
    ditno

    ditno

    ditno

    ditno. has taken the complexity out of IT security. We provide a single web portal to control access to all of an organization's servers whether they are in the cloud or internally hosted. We solve the problem of consistent and high-performance security across mixed environments. Using a PAYG model we remove the need for upfront investment and allow our customers to pay for exactly what they need at the time. We have a variety of customers across a number of verticals including law, energy, financial services, healthcare, technology and more across Australia and the UK.
    Starting Price: $25/endpoint/year
  • 6
    Bit Guardian Firewall
    Bit Guardian Firewall is a robust security solution designed to provide a safe, secure, and seamless browsing experience. It offers real-time protection against malicious content by blocking unsafe URLs and filtering unwanted websites and applications. The software includes an ad-blocking feature to eliminate distracting and potentially harmful pop-up and banner ads, ensuring uninterrupted browsing. Additionally, Bit Guardian Firewall safeguards user privacy by preventing online tracking, allowing users to connect to their favorite websites without the fear of being traced. For enhanced security, it offers add-on protection with Avira's malware databases, providing an impenetrable layer against online and offline threats. The firewall is compatible with Windows operating systems and is developed by Bit Guardian GmbH, a leading software development company based in Gräfelfing, Germany.
    Starting Price: Free
  • 7
    WAPPLES SA

    WAPPLES SA

    Penta Security Systems, Inc.

    WAPPLES SA (software appliance) is a virtual web application firewall (WAF) that can be seamlessly integrated with cloud systems and other virtual environments. It is a great solution for enterprise customers such as data centers and hosting providers as well as SMBs such as managed security service providers and private cloud business infrastructures. WAPPLES SA has support for popular hypervisors including KVM, Citrix Hypervisor, and vSphere Hypervisor. WAPPLES SA (Software Appliance) generally provides all the capabilities of the hardware WAPPLES appliance with the added ability to scale as your business grows. Based on the same award-winning WAPPLES technology, WAPPLES SA can detect and block known, modified, and zero-day attacks with its Contents Classification and Evaluation Processing (COCEP™) engine.
  • 8
    AP Lens

    AP Lens

    AP Lens

    AP Lens is a Sandbox Browser that isolates networks using DNS Whitelisting. We stop the attack before it reaches the network. What does AP Lens provide? - Web Filtering: Flexible and user-friendly content blocking. - Anti-Phishing: Stop look-alike domains with 100% accuracy. - Ransomware Protection: Isolate the network without affecting business applications. - Secure Remote Work: Enforce internet usage policies without VPN slowness. - No More 0-Day Attacks: Escape the limits of blacklisting with AP Lens Augmented Whitelist. - Compliant: AP Lens meets regulatory requirements requested by cybersecurity insurance policies. - One-Click Installation: No need for a lengthy setup process or updating from the user's side. - No Maintenance: Stop malware and phishing without continuous monitoring. Our team builds on over 20 years of experience in cyber security, cloud security, and information protection in industries such as private banking and the public sector.
    Starting Price: $5
  • Previous
  • You're on page 1
  • Next