🧱 Best Firewall Tools 2026

pfSense

Free

Open-source firewall/router based on FreeBSD.

4.7 (268)

pfSense is a free, open-source firewall and router distribution based on FreeBSD, widely used for enterprise network security.

Best for: Best for users wanting network-level firewall protection

Little Snitch

From $59/mo

macOS application firewall with stealth mode.

4.6 (442)

I used to hop from VPN to VPN as if I was shopping for new shoes — never quite satisfied. Then I stumbled upon Little Snitch. It's that vigilant guardian at the gate of your Mac, watching over every network connection like a hawk. For anyone paranoid about apps phoning home without permission, this is your tool. It doesn’t just block unwanted connections; it lets you decide in real-time which ones to allow, like bouncers at an exclusive club. The real magic lies in its ability to visualize your network activity, offering a bird's eye view that's both enlightening and slightly addictive. Whether you're a curious techie or someone who just wants peace of mind, Little Snitch has you covered with its slick interface and customizable alerts. But, fair warning, it might make you a bit obsessive about who your apps are chatting with.

Best for: Best for users wanting network-level firewall protection

OPNsense

Free

Open-source firewall with modern web UI and plugin system.

4.6 (398)

OPNsense is a fork of pfSense offering an open-source firewall and routing platform with modern web interface and plugins.

Best for: Best for users wanting network-level firewall protection

Fortinet FortiGate

From $0/mo

Enterprise next-gen firewall with integrated SD-WAN.

4.5 (308)

Fortinet FortiGate is enterprise firewall hardware providing advanced threat protection and network security.

Best for: Best for users wanting network-level firewall protection

GlassWire

From $0/mo

Network monitoring and firewall with visual interface.

4.4 (404)

GlassWire is a network monitor and firewall that visualizes traffic and alerts on suspicious connections.

Best for: Best for users wanting network-level firewall protection

Sophos XG Firewall

From $0/mo

Enterprise firewall with Synchronized Security and threat intelligence.

4.3 (144)

Sophos XG Firewall provides enterprise-grade network security with advanced threat protection, web filtering, and VPN.

Best for: Best for users wanting network-level firewall protection

Arista Edge Threat Management

From $0/mo

Network security gateway with web-based management.

4.2 (311)

Arista Edge Threat Management is a modular network security platform with firewall and threat protection for small and mid-sized organizations and distributed networks.

Best for: Best for users seeking privacy and security tools