Data as of Sep 9, 2026 · Based on 3,265,539 AI responses across 10,525 prompts · See how Parse measures this
OPNsenseopnsense.orgOPNsense is an open-source firewall and routing platform built on FreeBSD that delivers feature-rich, enterprise-grade network protection. It supports multi-WAN, VPNs (IPsec, OpenVPN, Tinc, WireGuard), and hardware failover via CARP, along with intrusion prevention and monitoring using Suricata and threat intelligence feeds. The project emphasizes a community-driven, BSD/MIT-licensed ecosystem with documentation, forums, and optional Business Edition and training resources.
The market map · 5 of 100 labelled
Network Firewall Solutions →75%positive
Where OPNsense ranks in AI
modernrobustenterprise-gradeopen-sourceexcellentfeature-richhardware-baseduser-friendly
Excerpts where OPNsense appeared in the AI's answer
OPNsense—but VyOS is arguably better if you want the box to behave more like a router/network appliance than a traditional GUI firewall.
OPNsense is widely considered the best open-source firewall software for a network engineer deploying on custom x86_64 hardware
Excerpts where OPNsense appeared in the AI's answer
OPNsense / pfSense CE: These are powerful, FreeBSD-based open-source firewall platforms that you install on your own dedicated mini-PC
OPNsense / pfSense Community Edition : Popular open-source firewall routing software packages
Excerpts where OPNsense appeared in the AI's answer
OPNsense/pfSense CE — firewall/VPN/network segmentation where appropriate.
OPNsense : A powerful routing and firewall platform that serves as an excellent substitute for commercial appliances like Fortinet FortiGate or SonicWall.
