OpenSnitch is a GNU/Linux port of the Little Snitch firewall
Simple tool to configure Windows Filtering Platform (WFP)
Serve as a reverse proxy to protect your web services from attacks
A high-performance MySQL proxy
LuLu is the free open-source macOS firewall
Network Security Appliance Linux Distribution
A simple way to block access to the internet per app
A firewall for humans.
Firewall able to analyze visitor behavior & provide adapted response
AgentGuard is a firewall for AI agents
OWASP Coraza WAF is a golang modsecurity compatible firewall library
HTTP proxy to block ads and customize webpages
Manage port forwardings via UPnP
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Next Generation Open Source Firewall
Intelligently block brute-force attacks by aggregating system logs
iptables script in only one file
Firewall log analyzer
Anti Spam SMTP Gateway
RazWall Firewall
Antivirus eCAP adapter for Squid 3.1 and above.