💡 Pick it for an integrated WAF, CDN, DNS, and DDoS platform with more accessible entry-level pricing.
Cloudflare Web Application Firewall (WAF) protects websites from malicious traffic and attacks.
Varies based on plan
Best Signal Sciences Alternatives ranked by AI · updated Aug 2026
Fastly Next-Gen WAF, formerly Signal Sciences, is a cloud-based web application and API firewall for security teams protecting internet-facing applications. It combines behavioral detection, bot management, virtual patching, and centralized policy controls with deployment options for cloud, edge, and Kubernetes environments.
Top 6 Signal Sciences alternatives
💡 Pick it when your applications already run on AWS and you want native controls with usage-based pricing.
AWS WAF is a web application firewall that helps protect web applications from common web exploits that could affect application availability, compromise...
Pricing based on usage
3
Akamai App & API Protector
Akamai
💡 Pick it for enterprise-scale traffic, extensive DDoS protection, and Akamai's global edge footprint.
Akamai App & API Protector secures websites, applications, and APIs at Akamai's global edge. It combines WAF, API security, bot mitigation, and...
Pros
- Very large edge footprint and strong high-volume DDoS absorption
- Combines WAF, API security, and bot controls in one enterprise platform
- Well suited to globally distributed and high-traffic applications
Cons
- More expensive and operationally complex than AppTrana
- Sales-led pricing makes small deployments difficult to evaluate
- Configuration can require Akamai-specific expertise
Contact sales
💡 Pick it when you need hybrid deployment, virtual patching, and broad enterprise security controls.
Imperva's WAF offers advanced security features for web applications.
Pros
- Comprehensive threat protection
- Scalable and flexible
Cons
- May require some learning curve for new users
Contact Imperva for pricing
💡 Pick it for unified WAAP controls across multi-cloud, Kubernetes, data-center, and edge environments.
F5 Distributed Cloud WAAP protects web applications and APIs across cloud, data center, and edge environments. It combines WAF, API discovery and...
Pros
- Strong fit for hybrid, multi-cloud, and distributed application architectures
- Combines API discovery, WAF, bot defense, and DDoS mitigation
- Useful policy and traffic controls for complex enterprise deployments
Cons
- More complex to implement than AppTrana for straightforward websites
- Enterprise pricing is not publicly listed
- Requires more specialized operational knowledge than Cloudflare
Contact sales
6
Radware Cloud WAF
Radware
💡 Pick it for managed WAF, DDoS, and bot protection backed by Radware security services.
Radware Cloud WAF is a managed application and API security service delivered through Radware's cloud network. It is aimed at organizations seeking...
Pros
- Combines WAF with DDoS and bot protection
- Managed service options reduce day-to-day security operations
- Supports API discovery and protection use cases
Cons
- Smaller ecosystem and market presence than Cloudflare or AWS
- Less transparent pricing and fewer self-service options
- Integrations and community guidance are not as extensive as leading alternatives
Custom pricing
How good are these alternatives?
Your feedback helps us improve the AI rankings.
✅ Thanks for your feedback!
Know a better alternative? 🙌
Suggest a product and our AI will verify it's a real alternative to Signal Sciences before adding it to the list.
