Best Web Application Firewalls (WAF)
View:
Compare the Top Web Application Firewalls (WAF) as of May 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
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. -
2
SKUDONET
SKUDONET
Reliable, Scalable, and Secure Load Balancing Formerly known as Zevenet, SKUDONET Enterprise Edition is an advanced and highly scalable Open Source Application Delivery and Security Platform designed to handle large volumes of traffic across any environment—whether physical, virtual, or cloud-based for modern IT infrastructures. Built on the Linux Debian system, SKUDONET offers a robust platform that integrates advanced security and performance features, offering a cost-effective alternative to other solutions on the market. Key Features & Benefits: ✔ High Availability – Prevents downtime with intelligent traffic balancing and clustering ✔ Advanced Security – Includes DoS protection, SSL offloading, and L7 filtering to enhance cybersecurity ✔ High Scalability – Multi-core processing, optimized packet handling, and support for high-throughput environments ✔ Flexible Deployment – Available for bare metal, virtual machines, and cloud platforms with BYOL (AWS, DigitalOcean)Starting Price: $1736/year/appliance -
3
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. -
4
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
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 -
6
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 -
7
Palo Alto Networks NGFW
Palo Alto Networks
Our ML-Powered NGFW physical appliances enable you to stay ahead of unknown threats, see everything, including IoT, and reduce errors with automatic policy recommendations. VM-Series, the virtualized version of our ML-Powered NGFW, protects your private and public cloud deployments with segmentation and proactive threat prevention. CN-Series, the containerized version of our ML-Powered NGFW, prevents sophisticated network-based threats from spreading across Kubernetes namespace boundaries. -
8
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
-
9
AppTrana
Indusface
Indusface’s AppTrana is a fully managed web application firewall that ensures risk-based protection with its DDoS, API risk, and Bot mitigation services while assuring web acceleration with secure CDN. Combining automated scanning with manual pen-testing, it detects application vulnerabilities. All of this with 24x7 expert support to meet zero false-positive guarantees. Indusface is the only vendor to be named Customers’ Choice for WAAP in all the 7 segments of the Gartner VoC 2022 Report.Starting Price: $99/month -
10
Haltdos
Haltdos
Haltdos promises an intelligent WAF & DDoS mitigation service with multi-layered security to online businesses requiring zero management. It is a self-learning solution that continuously learns and adapts network/website traffic and provides real-time and historical insights with stunning visualization. It also provides attack alerts and notifications, attack signatures, customer misbehavior, and audit trail. -
11
Sucuri
Sucuri
Our dedicated researchers monitor active malware campaigns. With a trained team of analysts, we aim to provide the best malware removal service around. Best in class tools and scripts scan your website for malware in real-time. Our security analysts examine the source code to detect any irregularities. No hack is too complex for our incident response team to detect and fix. If you need immediate assistance, we can accomodate. Choose a plan that fits your needs. Chat with us to learn about our one-time priority cleanup service. We specialize in eliminating complex malware infections. We guarantee your fixed price, regardless of frequency or level of sophistication. All website security packages cover your site for a year, including unlimited cleanups, pages, and databases. Your site is a perfect fit for Sucuri, whether you use a CMS or not. We fix any website malware infection and specialize in open-source content management systems.Starting Price: $9.99 per month -
12
Barracuda CloudGen Firewall
Barracuda
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. -
13
WebARX
WebARX
Protect websites from plugin vulnerabilities. WebARX is not just a security plugin – it is much more. Block malicious traffic with our lightweight web application firewall. Create your own firewall rules with WebARX firewall engine. Monitor your websites for possible security issues and vulnerabilities. WebARX is actively updated and helps you adapt the latest security practices. Generate weekly security reports and stay alerted when anything needs your immediate attention.Starting Price: $14.99 per month -
14
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.
-
15
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.
-
16
VMware Avi Load Balancer
Broadcom
Simplify application delivery with software-defined load balancers, web application firewall, and container ingress services for any application in any data center and cloud. Simplify administration with centralized policies and operational consistency across on-premises data centers, and hybrid and public clouds, including VMware Cloud (VMC on AWS, OCVS, AVS, GCVE), AWS, Azure, Google, and Oracle Cloud. Free infrastructure teams from manual tasks and enable DevOps teams with self-service. Application delivery automation toolkits include Python SDK, RESTful APIs, Ansible and Terraform integrations. Gain unprecedented insights, including network, end users and security, with real-time application performance monitoring, closed-loop analytics and deep machine learning. -
17
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. -
18
Explore our flexible deployment options, award-winning service, and industry-leading service-level agreements (SLAs). In today's digital economy, your online business must be available 24x7x365 to customers, partners, and employees. Adaptive, behavioral-based algorithms block never-before-seen attacks with the lowest false positive rate in the industry. Accurately distinguishes legitimate from malicious traffic, enabling advanced SLA and increasing service availability. Comprehensive protection eliminates anomalous flows that consume network resources and impact application availability. On-demand, always-on, or hybrid? We give organizations the widest security coverage from today's DDoS attacks. Options include WAF, threat intelligence, advanced analytics, SSL traffic inspection, cloud signaling and hybrid DDoS protection. Cisco Firepower 4100 Series and 9300 appliances have enterprise-grade DDoS mitigation capabilities with Virtual DefensePro (vDP).
-
19
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 -
20
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 -
21
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 -
22
MyDiamo
Penta Security Systems Inc.
Developed by Penta Security Systems, an APAC leader in encryption technology and web application firewall, MyDiamo is a free open-source database encryption solution, available to all for non-commercial use. The commercial license is available for enterprises and organizations that desire extended features. -
23
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. -
24
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 -
25
Modshield SB
StrongBox IT
Modshield SB Web Application Firewall (WAF) – Powered by Modsecurity and OWASP CRS, is tailor-made to fit all your application security needs. Modshield SB is packed with security features that enable a 360-degree protection for your applications and hosting infrastructure. Powered by the OWASP Core Ruleset, Modshield SB provides optimal coverage against OWASP Top 10 threat vectors, automation protection and protection against credential stuffing attacks. Why Modshield SB Web Application firewall? Modshield SB helps you to commit to your business users, Confidentialty, Integrity and Availability of business applications. Implementing an enterprise grade first line of defense, for your applications has never been simpler. Powered by the OWASP Core Ruleset, Modshield SB inherently protects all your applications against the OWASP Top 10 threats. You are no longer required to run a seperate Load Balancer. Take advantage of Modshield SB's built-in load balancer.Starting Price: $0.58 per hour -
26
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 -
27
StormWall
StormWall
StormWall is a global cybersecurity leader, protecting websites, networks, and IT infrastructures from modern DDoS threats. With 12+ years of experience, we serve 1,000+ clients in 70 countries and have completed over 8,000 projects. Our global filtering network includes 8 scrubbing centers with 5+ Tbps capacity, mitigating all DDoS attack vectors from L3 to L7. The Enterprise plan features Antibot to protect critical web applications from bot threats. Using AI-driven threat detection, StormWall swiftly identifies and neutralizes complex multi-vector attacks. Our evolving cloud-based platform ensures top-tier protection against emerging threats. Clients pay only for legitimate traffic, avoiding attack-related costs. Our 24/7 expert support guarantees response times of 15 minutes or less for rapid issue resolution.Starting Price: $100/month/user -
28
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 -
29
Azure Web Application Firewall
Microsoft
Azure Web Application Firewall is a cloud-native service that protects web apps from common web-hacking techniques such as SQL injection and security vulnerabilities such as cross-site scripting. Deploy the service in minutes to get complete visibility into your environment and block malicious attacks. Protect your web applications in just a few minutes with the latest managed and preconfigured rule sets. The Azure Web Application Firewall detection engine combined with updated rule sets increases security, reduces false positives, and improves performance. Use Azure Policy to help enforce organizational standards and assess compliance at scale for Web Application Firewall resources. Get an aggregated view to evaluate the overall state of your environment.Starting Price: $0.443 per gateway per hour -
30
A10 Thunder ADC
A10 Networks
High-performance advanced load balancing solution that enables your applications to be highly available, accelerated, and secure. Ensure efficient and reliable application delivery across multiple datacenters and cloud. Minimize latency and downtime, and enhance end-user experience. Increase application security with advanced SSL/TLS offload, single sign-on (SSO), DDoS protection and Web Application Firewall (WAF) capabilities. Complete full-proxy Layer 4 load balancer and Layer 7 load balancer with flexible aFleX® scripting and customizable server health checks.
