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    OPNsense Alternatives

    OPNsense is described as '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' and is a Firewall in the security & privacy category. There are more than 10 alternatives to OPNsense for a variety of platforms, including Linux, Self-Hosted solutions, Windows, BSD and VirtualBox. The best alternative is pfSense, which is both free and Open Source. Other great apps like OPNsense are MikroTik RouterOS, Endian Firewall Community, VyOS and IPFire.

    OPNsense is mainly a Firewall but alternatives to it may also be VPN Services or Anti-Malware Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OPNsense.
    This page was last updated Mar 18, 2022
    • FreeOpen Source
    • Self-Hosted
    OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the...
    Learn more about OPNsense

    1. pfSense is a free, open source customized distribution of FreeBSD tailored for use as a firewall, and router.
      pfSense vs OPNsense opinions
      pros, cons and recent comments
      Zazucki Read this: Especially the part under "Politics, drama & bad blood between the two projects"
      Negative comment 2 months ago

    2. The main product of MikroTik is a Linux-based operating system known as MikroTik RouterOS.

    3. Endian Firewall Community (EFW) is a "turn-key" linux security distribution that turns every system into a full featured security appliance with Unified Threat Management (UTM) functionality.
    4. VyOS is a community fork of Vyatta , a Linux-based network operating system that provides software-based network routing, firewall, and VPN functionality.
    5. IPFire is a server distribution with intended to use as a firewall. It focuses on flexibility, and scales from small to middle sized business networks and home networks.

    6. 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.


      From the Zeroshell website (translated from Italian to English)

      Disposal of the Zeroshell project

      The project has now reached the end of its life. Zeroshell was born in June 2006 and has over 200,000 installations worldwide. Any security updates will be guaranteed until September 30, 2021. I thank everyone who believed and contributed in various ways to improving the project. The domain will be divested or sold on September 30, 2021

    7. Untangle is a platform for deploying network based applications. The platform unites these applications around a common GUI, database and reporting.
      • Windows
      • VirtualBox
      • VMware vSphere Hypervisor
      • Microsoft Hyper-V Server
      • Proxmox Virtual Environment
      All CacheGuard products and services are focused on delivering secured and optimized Web contents to our clients. To achieve that goal we made CacheGuard OS which is our core product.
    8. The SmoothWall Open Source Project was set up to develop and maintain SmoothWall Express - a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.


      The site says the last release was October 2014.

      • FreeOpen Source
      • BSD
      • Self-Hosted
      BSD Router Project (BSDRP) is an embedded free and open source software router distribution based on FreeBSD with FRRouting (Quagga fork) and Bird.
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    Showing 10 of 15 alternatives