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Open Source Sophos UTM Alternatives

The best open source alternative to Sophos UTM is pfSense. If that doesn't suit you, our users have ranked more than 10 alternatives to Sophos UTM and five of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Sophos UTM are ClearOS, Endian Firewall Community, DANOS and Scrollout F1.

Sophos UTM alternatives are mainly Firewalls but may also be VPN Services or Operating Systems. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Sophos UTM.
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  • Linux
  • Online

Sophos UTM integrates complete security software within a single appliance. Choose only the protection you need when you...

Learn more about Sophos UTM

  1. pfSense is a free, open source customized distribution of FreeBSD tailored for use as a firewall, and router.

    Almost everyone thinks pfSense is a great alternative to Sophos UTM.
  2. ClearOS icon


    • FreeOpen Source
    • Linux

    ClearOS is a family of operating systems for the enterprise, small business, and home. There are three editions to choose from depending on your needs and suitable to your abilities. They are: ClearOS Enterprise, ClearOS Home, and ClearOS Core.

    ClearOS vs Sophos UTM opinions
    pros, cons and recent comments

    very easy to use and inexpensive

    Positive comment ago
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  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. DANOS icon


    • FreeOpen Source
    • Self-Hosted

    DANOS unified network operating system driving innovation across the networking stack. DANOS is based upon Vyatta and uses DPDK so it should be able to forward packets line rate (10G).

    No screenshots yet
  5. Scrollout F1 icon

    Scrollout F1

    • FreeOpen Source
    • Linux
    • Self-Hosted

    Scrollout F1 is a free self-hosted email gateway designed for Linux & Windows administrators without advanced email security experience.


    Last update released in 2018, unsupported on newer versions of Debian.

Showing 5 of 5 alternatives