OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.




pfSense is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is OPNsense, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to pfSense and 17 are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to pfSense are MikroTik RouterOS, NethServer, DynFi Firewall and Vilfo OS.
OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.




Linux-based system converts standard PCs into customizable routers, featuring advanced firewall, VPN server and client, bandwidth control, QoS, wireless AP, captive portal, remote management, industry protocol support, automation, and scalable licensing for network needs.

NethServer is an application manager for Linux servers. The product's main feature is the ability to easily and quickly install and manage instances of applications over multiple nodes. It allows users to deploy services, like [Nextcloud](https://alternativeto.




DynFi® Firewall is the first French Open Source firewall. The system integrates many filtering features and allows for the first time to manage a large number of your appliances. Available for free, DynFi Firewall has two images (with VGA or Serial return) compatible with...




A modern replacement for Sophos UTM based on Sophos, Cyberoam and Astaro technology combined.


OpenWISP is a free and open-source platform for efficient IT network deployment, monitoring & management. It allows automation of many aspects of networks: from configuration to monitoring, RADIUS, hotspots, mesh and firmware upgrades, all backed by the reliability of the...




Zeroshell is a Linux distribution for servers and embedded devices aimed at providing the main network services a LAN requires. It is available in the form of Live CD or Compact Flash image and you can configure and administer it using your web browser.



CacheGuard is a free open-source network security appliance for startups and growing businesses that need enterprise-grade protection without the complexity or the cost.

A secure, open-source WiFi router that simplifies network management with easy-to-use policies, device isolation, adblock and advanced DNS controls - customizable with plugins for added flexibility.




Contrail Networking is a software-defined networking (SDN) platform based on the open-source network virtualization project, OpenContrail. The Juniper platform automates and orchestrates the creation of highly scalable virtual networks.
Centralized manager for Open Source firewalls
Automate certain administrative tasks All your firewalls are accessible in 1 click Auto-connect your firewalls to DynFi Manager pfSense® and OPNsense® compatible manager.
Read this: https://teklager.se/en/pfsense-vs-opnsense/ Especially the part under "Politics, drama & bad blood between the two projects"