OWASP Coraza WAF is a golang modsecurity compatible firewall library
Handy, High performance, ModSecurity compatible Nginx firewall module
SKUDONET Open Source Load Balancer and Web Application Firewall
Next-generation and open-source Web Application Firewall (WAF).
Web Application Firewall
Powerfull Web Application Firewall for PHP
Nginx and Lua Based Easy to setup Web Application Firewall