Barracuda Web Application Firewall - Barracuda Web Application Firewall offers security and DDoS protection against automated & targeted attacks.
Imperva SecureSphere - Get the flexibility, reliability, and performance you need to protect your business. SecureSphere covers you both on-premises or in the cloud.
AWS WAF - AWS WAF is a web application firewall that helps protect your web applications from common web exploits.
ModSecurity - ModSecurity is an Open Source web application firewall developed by Trustwave's SpiderLabs.
SiteLock - SiteLock software provides advanced website security, daily security scans, web app firewall with a CDN to deliver content more securely.
Imperva Cloud Application Security - Deploy your applications and data where you want. When you want. Imperva keeps them secure in the cloud, on premises, and in hybrid clouds.