pfSense
Network Security
Open-source firewall and router platform based on FreeBSD providing enterprise-grade features including VPN, traffic shaping, and intrusion detection for free.
Price$10.75+ / month
Network Security
Open-source firewall and router platform based on FreeBSD providing enterprise-grade features including VPN, traffic shaping, and intrusion detection for free.
Price$10.75+ / month
Network Automation
Open-source network configuration analysis tool validating network changes before deployment by modeling network behavior.
Firewall
Chinese integrated security vendor offering firewall, IDS, SOC, and situational awareness platforms for government and critical infrastructure.
Zero Trust Network Access
Open-source alternative to Tailscale creating a secure private network between devices using WireGuard.
Price$6+ / user / month
Starting price: below the category median.Process Mining
Open-source framework for process mining research and analysis with hundreds of plugins for event log analysis.

Firewall
Network security vendor offering firewalls, multifactor authentication, and endpoint security for midmarket customers.
Firewall
Chinese cybersecurity platform delivering WAF, database audit, and threat intelligence services for government and enterprise networks.

API Security Platforms
API security platform providing design-time audit, runtime protection, and conformance scanning for OpenAPI-defined APIs.

Cybersecurity
Sophos provides next-generation cybersecurity including endpoint protection, network security, email security, and cloud security with AI-powered threat detection.

Network Security
Real-time threat prevention platform delivering AI-powered content security and malware defense for service provider networks.