Open source
BunkerWeb
Open source reverse proxy WAF that protects web services
Network DefenseOpen source next gen WAF
Alternatives to Imperva
12 tools like Imperva, chosen by what they do. About Imperva
Open source
ModSecurity
Open source web application firewall engine used with OWASP rules
Network DefenseOpen source WAF engine
Paid
Sucuri
Website security service for malware cleanup and firewall
Network DefenseWebsite firewall and cleanup
Freemium
hCaptcha
Privacy-focused CAPTCHA and bot detection for sites and apps
Network DefensePrivacy focused CAPTCHA
Open source
OWASP Coraza
Go-based open source web application firewall with CRS support
Network DefenseGo web application firewall
Open source
Pomerium
Identity-aware access proxy for private apps, SSH and Kubernetes
Network DefenseIdentity aware access proxy
Open source
Open source
NetBird
Open source zero trust network access built on WireGuard
Network DefenseOpen source zero trust network
Open source
Proton VPN
VPN with a free plan, open source apps and a no-logs audit
Network DefenseSwiss privacy VPN
Freemium
Open source
Headscale
Self-hosted, open source server for a Tailscale network
Network DefenseSelf hosted Tailscale server