Best Web Application Firewalls (WAF)
View:
Compare the Top Web Application Firewalls (WAF) as of October 2025
Sort By:
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
A10 Defend Threat Control
A10 Networks
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. -
2
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 -
3
5centsCDN
5centsCDN
Experience cutting-edge content delivery with 5centsCDN's subscription plans: CDN Plans Standard: From $2.5/TB, with 10+ Points of Presence and delivery in NA and EU only. Enterprise: From $15/TB, offering 50+ Points of Presence for worldwide content delivery. CDN+ Plans Standard+: From $10/TB, with 20+ Points of Presence and delivery in NA and EU only. Enterprise+: From $35/TB, access 70+ Points of Presence for worldwide content delivery. Join over 5000 satisfied clients, including OTT platforms, IPTV providers, agencies, gamers, government bodies, NGOs, and major TV channels who trust 5centsCDN for advanced video-on-demand streaming and live streaming solutions. Our robust network ensures lightning-fast, secure, and cost-effective content delivery, along with essential features like web acceleration.Starting Price: $2.50 -
4
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.Starting Price: $20 per website -
5
SKUDONET
SKUDONET
SKUDONET Enterprise Edition is an Application Delivery and Security Platform built on Linux Debian 12.5 LTS for critical enterprise environments. It provides advanced L4/L7 load balancing, integrated WAF, TLS management with Let’s Encrypt and wildcard support, and protocol-aware traffic inspection across on-premises, hybrid, or cloud deployments, including SkudoCloud SaaS. A free trial is available for evaluation on the SKUDONET website. Key Features & Benefits: • High Availability: Clustering and failover to minimize downtime. • Advanced Security: WAF, L7 filtering, DoS protection, TLS with Let’s Encrypt and wildcard support. • Scalability: Optimized for high-throughput workloads with multi-core processing and efficient packet handling. • Traffic Control: Session persistence, custom routing rules, and granular L4/L7 inspection. • Centralized Management: Unified dashboard for configuration, monitoring, and policy automation.Starting Price: $1736/year/appliance -
6
Advanced Web Application Firewall (WAF) protect your apps with behavioral analytics, proactive bot defense, and application-layer encryption of sensitive data. Use the ROI Estimator from F5 and Forrester to find out how Advanced WAF can improve your security posture and save you money. The F5 F5 BIG-IP Advanced WAF provides a powerful set of security features that will keep your Web Applications safe from attack. Many WAFs offer a basic level of protection from attack at the higher layers of the OSI stack, but the F5 Advanced WAF takes things even further and offers some serious security features like Anti Bot Mobile SDK, Credential Stuffing threat feeds, Proactive Bot Defense, and Datasafe to name a few. Protect your apps, APIs, and data against the most prevalent attacks such as zero-day vulnerabilities, app-layer DoS attacks, threat campaigns, application takeover, and bots.
-
7
Mitigate web app attacks and vulnerabilities with comprehensive security controls and uniform policy and observability via our SaaS-delivered WAF that’s quick to set up and deploy, and easy to manage and scale across any environment. Simplify app security by seamlessly integrating protections into the development process with core security functionality, centralized orchestration, and oversight. F5 Distributed Cloud WAF eases the burden and complexity of consistently securing apps across clouds, on-premises, and edge locations. Delivering the programmability that DevOps needs combined with the efficacy and oversight that SecOps mandates, enabling faster, more secure application delivery and release cycles. Quickly improve visibility and insight across all security events including WAF signatures hit, DoS events, automated and persistent threats, and all other client interactions along with app performance, including intuitive drill-down capabilities.
-
8
Loadbalancer.org
Loadbalancer.org
Since 2003, Loadbalancer.org has provided reliable, versatile and cost-effective load balancers engineered to improve the availability of your most critical IT applications. We have extensive experience of solving application delivery challenges, so you can expect honest advice and outstanding support from the load balancer experts. Working closely with leading technology providers in medical, object storage and print, our ADC solutions are specifically tailored to ensure seamless integration and better compatibility for enhanced performance of the entire solution.Starting Price: $95 per month -
9
Traceable
Traceable
Meet the Industry’s Context-Aware API Security Platform Traceable identifies all of your APIs, and evaluates your API risk posture, stops API attacks that lead to incidents such as data exfiltration, and provides analytics for threat hunting and forensic research. With our solution, you can confidently discover, manage and secure all of your APIs, quickly deploy, and easily scale to meet the ongoing needs of your organization. If you’re planning on improving the data security posture in your APIs, Traceable would love the opportunity to discuss how we could help and share some of our lessons learned from working with enterprise customers like Canon, Informatica, Outreach, and many others.Starting Price: $0 -
10
SafeLine WAF
Chaitin Tech
SafeLine WAF is a self-hosted, semantic-based Web Application Firewall developed by the team at Chaitin Technology. It focuses on protecting web applications from a wide range of threats, especially zero-day and application-layer (Layer 7) attacks, with high precision and minimal false positives. It is open source, easy to deploy, and designed to be flexible enough for both enterprise and personal use.Starting Price: $0/month -
11
Edgenexus Load Balancer (ADC/WAF/GSLB)
Edgenexus
Choose us because we offer the easiest to use technology without sacrificing features or performance. We back this up with outstanding support and care, delivered under a fair and cost effective pricing model Our technology is used by the smallest startups with big ideas and small budgets all the way to global enterprises and anything in between. We love them all the same! Easy to use Load balancing, WAF, GSLB and SSO/Pre-Authentication. It is also the Only true ADP Application Delivery Platform where the functionality and lifespan can be enhanced using the app store or applications that you develop in house.Starting Price: $50 -
12
Barracuda WAF-as-a-Service
Barracuda
Configuring traditional web application firewalls can take days of effort. But Barracuda WAF-as-a-Service—a full-featured, cloud-delivered application security service—breaks the mold. Deploy it, configure it, and put it into full production—protecting all your apps from all the threats—in just minutes. -
13
Azure Application Gateway
Microsoft
Protect your applications from common web vulnerabilities such as SQL injection and cross-site scripting. Monitor your web applications using custom rules and rule groups to suit your requirements and eliminate false positives. Get application-level load-balancing services and routing to build a scalable and highly available web front end in Azure. Autoscaling offers elasticity by automatically scaling Application Gateway instances based on your web application traffic load. Application Gateway is integrated with several Azure services. Azure Traffic Manager supports multiple-region redirection, automatic failover, and zero-downtime maintenance. Use Azure Virtual Machines, virtual machine scale sets, or the Web Apps feature of Azure App Service in your back-end pools. Azure Monitor and Azure Security Center provide centralized monitoring and alerting, and an application health dashboard. Key Vault offers central management and automatic renewal of SSL certificates.Starting Price: $18.25 per month -
14
StormWall
StormWall
StormWall is a global cybersecurity provider focused on safeguarding websites, networks, services, and IT infrastructures of any size from modern DDoS attacks. With 12 years of experience in DDoS protection, StormWall serves 1,000+ clients in 70 countries. StormWall’s global filtering network spans 8 scrubbing centers with 5 Tbps filtering capacity. The company offers advanced protection against all known types of DDoS attacks at the L3-L7 layers, including multi-vector threats.Starting Price: $72/month/user -
15
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 -
16
R&S Web Application Firewall
Rohde & Schwarz Cybersecurity
R&S®Web Application Firewall (WAF) in combination with a network firewall significantly increases the security level of your company. This keeps you up to date with the requirements of a modern and resilient IT infrastructure. With decades of development and practical experience, our web application firewall solution effectively protects the corporate network against widespread attacks such as zero-day exploits, SQL injections, cross site scripting or Distributed Denial of Service (DDoS) attacks at the application level. Our web application firewall ensures optimal protection of critical enterprise applications, including legacy applications and custom APIs, against complex attacks while considering data protection regulations. As the business world becomes increasingly web-based, web applications play a growing role in enterprises. Cybercriminals are increasingly taking advantage of vulnerabilities in these web applications. -
17
ThreatSign Website Anti Malware
Quttera
ThreatSign Web Protection: Your Digital Fortification Adaptive Intelligence: Dynamic algorithms learn from patterns, anticipate threats, and adapt. No static defenses—ThreatSign evolves with the threat landscape. Zero-Day Shielding: Proactively neutralize vulnerabilities before they strike. Sleep soundly knowing your assets are fortified. Advanced WAF: Impenetrable barrier filters malicious traffic without hindering user experience. Swift Incident Response: Minimal downtime, maximum peace of mind. Your business continuity is our priority. Customized Defense: Tailored to your unique needs, whether e-commerce or financial. Financial Sector Ready: Compliance, data protection, trust. 24/7 Vigilance: Real-time monitoring, expert support. Blocklist Resolution: We meticulously analyze the issue, identify the root cause, and work tirelessly to remove your site from blocklists like Google Safe Browsing and other authorities. Elevate your security. Defend your domain.Starting Price: $10 per month -
18
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. -
19
Azure Front Door
Microsoft
Scalable and secure entry point for fast delivery of your global applications. Easily join your distributed microservice architectures into a single global application using HTTP load balancing and path-based routing rules. Automate turning up new regions and scale-out with API-driven global actions, and independent fault-tolerance to your back end microservices in Azure—or anywhere. Deliver and protect your global application close to your end users with a "battle-tested" service built on world-class Microsoft Global Network infrastructure. Always keep your traffic on the best path to your app, improve your service scale, reduce latency, and increase throughput for your global users with edge load balancing and application acceleration. Easily manage domain mapping and traffic to your microservice backends using one central, global dashboard. -
20
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 -
21
Qualys WAF
Qualys
Qualys Web Application Firewall (WAF) is a virtual appliance-based service that reduces the operational cost and complexity of application security. Leveraging a unified platform, it continuously detects attacks using inhouse inspection logics and rulesets, and virtually patches web application vulnerabilities if needed. Its simple, scalable and adaptive approach lets you quickly block web application attacks, prevent disclosure of sensitive information, and control when and where your applications are accessed. Qualys WAF can be used alone, or paired with Qualys Web Application Scanning (WAS). Together, they make identifying and mitigating web application risks seamless – whether you have a dozen apps or thousands. You scan your web applications using Qualys WAS, deploy one-click virtual patches for detected vulnerabilities in WAF and manage it all from a centralized cloud-based portal. Qualys WAF can be deployed in minutes, supports SSL/TLS. -
22
Imperva WAF
Imperva
Web application attacks prevent important transactions and steal sensitive data. Imperva Web Application Firewall (WAF) analyzes traffic to your applications to stop these attacks and ensure uninterrupted business operations. A noisy WAF forces you to choose between blocking legitimate traffic or manually containing attacks your WAF let through. Imperva Research Labs ensure accuracy to WAF customers as the threat landscape changes. Automatic policy creation and fast rule propagation empower your security teams to use third-party code without risk while working at the pace of DevOps. Imperva WAF is a key component of a comprehensive Web Application and API Protection (WAAP) stack that secures from edge to database, so the traffic you receive is only the traffic you want. We provide the best website protection in the industry – PCI-compliant, automated security that integrates analytics to go beyond OWASP Top 10 coverage, and reduces the risks created by third-party code. -
23
Greypanel
Greypanel
Greypanel CDN is an independently-researched and developed dispatching system that intelligently distributes globally-located acceleration nodes to users based on their access location. By assigning the nearest resources to users, GreypanelCDN improves web services capacity, network access quality, download speeds and reduces response time, providing in smoother user experience. Targeted at portals and e-commerce sites, GreypanelCDN caches static content such as web pages, HTML, CSS, JS, images and files onto the nodes to accelerate the distribution process. Visitors will be able to access the content from the nearest node and load complex content in seconds, significantly improving web access speeds and reducing site response time, leading to better user experience. Enjoy a fast, stable and secure dynamic request acceleration with our extensive network of acceleration nodes, a large reserve of direct connections and an intelligent scheduling system. -
24
Fastly Next-Gen WAF
Fastly
The Fastly Next-Gen WAF provides advanced protection for your applications, APIs, and microservices, wherever they live, from a single unified solution. Reporting and alerting feedback loops provide Layer 7 visibility across your entire app and API footprint. Integrations with your DevOps and security toolchains encourage the sharing and correlation of data and help simplify automation, both decreasing security risks and speeding up CI/CD. Our Next-Gen WAF uses SmartParse, a highly accurate detection method, to evaluate the context of each request and how it would execute, to determine if there are malicious or anomalous payloads in requests. SmartParse enables near-zero tuning and the ability to start detecting threats immediately. Block account takeover (ATO) attacks by inspecting web requests and correlating anomalous activity with malicious intent. -
25
A containerized environment for continuous web app protection, BIG-IP Next WAF ensures superior security with simplified management. Advanced capabilities make it easy to identify and mitigate threats efficiently. Save time and clicks when completing configuration workflows, reduce the initial tuning phase, and quickly be ready for blocking mode. Simplify detection and response to threats with actionable incident dashboards across multiple policies. Maintain consistent app security policies across environments, in the data center, the edge, or the public cloud. Purchase additional licenses via a simple platform mechanism to increase security coverage. Defend against common attack vectors, including known vulnerabilities (CVEs). Automatically mitigate active attack campaigns with intelligent updates by expert threat researchers at F5. Deliver key contextual awareness by identifying and blocking the sources of known bad IP addresses.
-
26
WebOrion Protector
cloudsineAI
WebOrion Protector is an enterprise-grade web application firewall (WAF) designed to deliver unmatched protection using the OWASP Core Rule Set (CRS). Built on the advice of the global OWASP community's leading experts in web application security, it leverages an intelligent anomaly-scoring, heuristics, and signature-based engine to defend against threats and exploits covered by the OWASP top 10 web application security risks. Rapidly respond to zero-day threats with seamless virtual patching and a powerful user interface built to streamline monitoring, analytics, and fine-tuning, with both entry-level and advanced users in mind. WebOrion Protector also comes equipped with specialized rulesets to protect login pages, WordPress sites, and more. It inspects all incoming and outgoing web traffic for your website with minimal performance impact. -
27
ArvanCloud
ArvanCloud
ArvanCloud CDN comprises tens of PoP sites in important locations all around the world to deliver online content to the users, from the closest geographical point at the highest speed and quality. With ArvanCloud Cloud Computing infrastructure, you are just a few clicks away from creating unlimited cloud servers on demand. You can create several cloud storage disks for each server and easily manage your cloud data center communications using Firewall and private and public networks. ArvanCloud allows you to save any kind of data on Cloud Storage in a completely encrypted format. You can have stable access to a reliable storage system from all around the world, without worrying about data loss. With ArvanCloud container-based Platform as a Service, which conforms to Kubernetes standards, you are just a few commands in CLI away from an operational product. -
28
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.
-
29
AppWall
Radware
AppWall - Radware’s Web Application Firewall (WAF), ensures fast, reliable and secure delivery of mission-critical Web applications and APIs for corporate networks and in the cloud. AppWall is an NSS recommended, ICSA Labs certified and PCI compliant WAF that combines positive and negative security models to provide complete protection against web application attacks, access violations, attacks disguised behind CDNs, API manipulations, advanced HTTP attacks (slowloris, dynamic floods), brute force attacks on login pages and more. At the core of Radware's web application and API protection Solution suite, AppWall is a web application firewall (WAF) that provides patent-protected technology to create and optimize security policies in real-time for widest security coverage with the lowest false positives and minimal operational effort. Radware’s Web application security technology features a variety of deployment modes. -
30
Alibaba Cloud WAF
Alibaba
Web Application Firewall (WAF) protects your website servers against intrusions. Our service detects and blocks malicious traffic directed to your websites and applications. WAF secures your core business data and prevents server malfunctions caused by malicious activities and attacks. Alibaba Cloud WAF is a web application firewall that monitors, filters, and blocks HTTP traffic to and from web applications. Based on the big data capacity of Alibaba Cloud Security, Alibaba Cloud WAF helps to defend against common web attacks such as SQL injections, Cross-site scripting (XSS), web shell, Trojan, and unauthorized access, and to filter out massive HTTP flood requests. It protects web resources from being exposed and guarantees website security and availability. In this video we show how to use and how to configure Web Application Firewall. WAF will be used to protect website and we will showcase WAF in action.
