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.

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    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.
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  • 2
    Alert Logic
    Alert Logic is the only managed detection and response (MDR) provider that delivers comprehensive coverage for public clouds, SaaS, on-premises, and hybrid environments. Since no level of investment prevents or blocks 100% of attacks, you need to continuously identify and address breaches or gaps before they cause real damage. With limited expertise and a cloudcentric strategy, this level of security can seem out of reach. Our cloud-native technology and white-glove team of security experts protect your organization 24/7 and ensure you have the most effective response to resolve whatever threats may come. Founded in 2002, Alert Logic is headquartered in Houston, Texas and has business operations, team members, and channel partners located worldwide. Learn more at alertlogic.com. Alert Logic – unrivaled security for your cloud journey.
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    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.
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