Best Web Application Firewalls (WAF)

Compare the Top Web Application Firewalls (WAF) as of June 2025

What are Web Application Firewalls (WAF)?

Web Application Firewalls (WAFs) are security solutions that protect web applications by filtering and monitoring HTTP traffic between the application and the internet. They detect and block threats such as SQL injections, cross-site scripting (XSS), and other common attacks targeting application vulnerabilities. WAFs analyze incoming requests in real time, applying customizable security rules to distinguish between legitimate and potentially malicious traffic. Many WAFs are cloud-based, enabling flexible and scalable protection without impacting application performance. By acting as a shield between web applications and attackers, WAFs help ensure data security, regulatory compliance, and uninterrupted user access. Compare and read user reviews of the best Web Application Firewalls (WAF) currently available using the table below. This list is updated regularly.

  • 1
    Fastly

    Fastly

    Fastly

    Empower your developers, connect with your customers, and grow your business with today’s leading edge cloud platform. Deliver the best online experiences possible with our edge cloud platform, built to strengthen your current teams and technology. We move data and applications closer to your users — at the edge of the network — to help your websites and apps perform faster, safer, and at global scale. Fastly's highly programmable CDN gives you the freedom to customize delivery right at the edge. Delight your users with the content they want at their fingertips. Our powerful POPs, driven by solid-state drives (SSDs) and hosted in well-connected locations around the world, help us keep more content in cache longer for fewer trips to the origin. Instant Purge and batch purging with surrogate keys let you cache and invalidate highly dynamic content with a mean purge time of 150 milliseconds*. Serve headlines, inventory, or weather forecasts that are always up to date.
    View Software
    Visit Website
  • 2
    A10 Defend Threat Control
    A10 Defend Threat Control, a SaaS component of the A10 Defend suite, offers a real-time DDoS attack map and proactive, detailed list of DDoS weapons. Unlike other tools available today that provide convenience at the cost of false positives and false negatives, A10 Defend Threat Control provides hands-on insights into attackers, victims, analytics, vectors, trends, and other characteristics, helping organizations establish a more robust security posture by delivering actionable insights to block malicious IPs that can launch or amplify DDoS attacks.
    View Software
    Visit Website
  • 3
    Cloudflare

    Cloudflare

    Cloudflare

    Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.
    Leader badge
    Starting Price: $20 per website
    View Software
    Visit Website
  • 4
    CacheGuard

    CacheGuard

    CacheGuard Technologies

    CacheGuard-OS transforms a virtual or bare metal machine into a powerful and easy to handle network appliance. It's a Linux based Operating System built from scratch and especially designed to Secure and Optimize the network traffic. Great care has been taken by CacheGuard-OS developers to select the best of the best Open Source technologies to integrate into CacheGuard-OS. The result is a robust and trustworthy solution that can be up and running within minutes. CacheGuard-OS integrates Open Source software such as but not limited to OpenSSL, NetFilter, IProute2, StrongSwan, ClamAV, Apache, ModSecurity, Squid and Open Source developments made by CacheGuard-OS developers.
    Starting Price: $9.99 per month
  • 5
    Fortinet FortiWeb Web Application Firewall
    Unprotected web applications and APIs are the easiest point of entry for hackers and vulnerable to a number of attack types. FortiWeb's AI-enhanced and multi-layered approach protects your web apps from the OWASP Top 10 and more. FortiWeb ML customizes the protection of each application, providing robust protection without requiring the time-consuming manual tuning required by other solutions. With ML, FortiWeb identifies anomalous behavior and, more importantly, distinguishes between malicious and benign anomalies. The solution also features robust bot mitigation capabilities, allowing benign bots to connect (e.g. search engines) while blocking malicious bot activity. FortiWeb also features API discovery and security, as well as threat analytics to identify meaningful security incidents. FortiWeb is available as an appliance, VM, and fully featured WAF-as-a-Service - which is available to trial and purchase in most cloud marketplaces.
    Starting Price: $30/mo for 1 app on SaaS
  • 6
    Barracuda CloudGen Firewall
    Get comprehensive protection for on-premises and multi-cloud deployment using the firewall built in and for the cloud. Frictionless, cloud-hosted Advanced Threat Protection detects and blocks advanced threats, including zero-day and ransomware attacks. Gain rapid protection against the newest threats with the help of a global threat intelligence network fed by millions of data collection points. Modern cyber threats such as ransomware and advanced persistent threats, targeted attacks, and zero-day threats, require progressively sophisticated defense techniques that balance accurate threat detection with fast response times. Barracuda CloudGen Firewall offers a comprehensive set of next-generation firewall technologies to ensure real-time network protection against a broad range of network threats, vulnerabilities, and exploits, including SQL injections, cross-site scripting, denial of service attacks, trojans, viruses, worms, spyware, and many more.
  • 7
    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.
  • 8
    BaishanCloud

    BaishanCloud

    BaishanCloud

    BaishanCloud provides seamless and reliable CDN with regional expertise, especially in China, Southeast Asia, and the Middle East. Reach the audience globally through more than 1000 PoPs, with highly secured anti-DDoS and WAF protection, and private networks. That is the reason why BaishanCloud has been trusted by the world’s top short media platforms with more than 10M users because of its high availability, high concurrency, and low-latency one-stop content delivery solution. Powered by edge computing and years of media industry service experience, BaishanCloud helps minimize the high-security risks across the site to guarantee continuous and stable major events and smooth video content delivery. BaishanCloud offers flexible customizations and special features to ensure our service and products are tailored to the customers’ needs. Get BaishanCloud’s free trial or select more features by customizing your own plan starting at $0.065/GB for the first 4TB global traffic.
    Starting Price: $0.065 per GB
  • 9
    Myra Security

    Myra Security

    Myra Security

    The German technology manufacturer Myra offers a secure, certified Security-as-a-Service platform for protecting digital business processes. The highly certified Security-as-a-Service platform protects your digital business processes against a wide range of risks such as DDoS attacks, bot networks and attacks on databases. Myra is specialized in protecting critical infrastructure, especially in the finance, insurance, healthcare and public sectors. Myra technology is certified by the German Federal Office for Information Security (BSI) according to the ISO 27001 standard based on IT-Grundschutz (Basic IT protection).
    Starting Price: 290 €/month
  • 10
    Reblaze

    Reblaze

    Reblaze

    Reblaze is the leading provider of cloud-native web application and API protection, providing a fully managed security platform. Reblaze’s all-in-one solution supports flexible deployment options (cloud, multi-cloud, hybrid, data center and service mesh), deployed in minutes and includes state-of-the-art Bot Management, API Security, next-gen WAF, DDoS protection, advanced rate limiting, session profiling, and more. Unprecedented real time traffic visibility as well as highly granular policies enables full control of your web traffic. Machine learning provides accurate, adaptive threat detection, while dedicated VPC deployment ensures maximum privacy, performance and protection while minimizing overhead costs. Reblaze customers include Fortune 500 companies and innovative organizations across the globe.
  • 11
    DDoS-GUARD

    DDoS-GUARD

    DDoS-GUARD

    DDoS-GUARD is one of the leading service providers on the global DDoS protection and content delivery markets since 2011. Unlike most of other companies, we provide services using our own network of scrubbing centers having sufficient channel and computing capacities to process high volumes of traffic. We do not resell other companies' services claiming them as our own. Today's digital world shows us ever-increasing number of cyber threats. Abreast of the latest trends, the number of DDoS attack types is increasing too. Besides, the attacks themselves become more volumetric, complex and varied. Realizing that, we are constantly modifying traffic scrubbing algorithms, increasing channel capacity, add computational resources to traffic processing centers. It allows us not only provide protection against all known DDoS attack types to our customers, but also detect and block any previously unknown anomalous network activity.
    Starting Price: $30/month
  • 12
    NetScaler

    NetScaler

    Cloud Software Group

    Application delivery at scale can be complex. Make it simpler with NetScaler. Firmly on-prem. All-in on cloud. Good with hybrid. Whichever you choose, NetScaler works the same across them all. NetScaler is built with a single code base using a software-based architecture, so no matter which ADC form factor you choose — hardware, virtual machine, bare metal, or container — the behavior will be the same. Whether you are delivering applications to hundreds of millions of consumers, hundreds of thousands of employees, or both, NetScaler helps you do it reliably and securely. NetScaler is the application delivery and security platform of choice for the world’s largest companies. Thousands of organizations worldwide — and more than 90 percent of the Fortune 500 — rely on NetScaler for high-performance application delivery, comprehensive application and API security, and end-to-end observability.
  • 13
    Edgio

    Edgio

    Edgio

    Securely deliver sub-second web applications, stream high quality OTT and live events, or distribute large file quickly to customers around the globe. Supported by Edgio experts in security, web applications, CDN, and managed streaming services. Edgio Uplynk: Optimize streaming with Edgio Uplynk our streaming management and orchestration platform backed by our OTT/live event services team. Cut costs, increase ad revenue, and delivery high quality experiences Edgio Delivery: Power your streaming media and large file downloads on one of the world’s largest, most advanced global CDNs. Edgio Open Edge: Improve the viewing experience by embedding the edge into your own network with Edgio’s fully managed CDN.
  • 14
    Oracle Web Application Firewall
    Protect applications from malicious and unwanted internet traffic with a cloud-based, PCI-compliant, global web application firewall service. By combining threat intelligence with consistent rule enforcement, Oracle Cloud Infrastructure Web Application Firewall strengthens defenses and protects internet-facing application servers. Adopt an edge security strategy with a web application firewall that aggregates threat intelligence from multiple sources including WebRoot BrightCloud® and more than 250 predefined OWASP, application, and compliance-specific rules. Protect applications deployed in Oracle Cloud Infrastructure, on-premises, and in multicloud environments with access controls based on geolocation data, whitelisted and blacklisted IP addresses, HTTP URL, and HTTP header. Identify and block malicious bot traffic with an advanced set of verification methods, including JavaScript, CAPTCHA, device fingerprinting, and human interaction algorithms.
  • Previous
  • You're on page 1
  • Next