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TrueNAS alternatives: 2 apps ranked by verified data

Facts checked Nov 1, 2026AppBreakup editorialHow we rank

Common reasons people leave TrueNAS: ZFS pools are less flexible than Unraid for mixing drive sizes, and high availability and Fibre Channel need paid Enterprise hardware. We ranked 2 alternatives by how directly each one replaces TrueNAS, then by reviews, real visits and how recently each app's facts were checked against its own website. Unraid currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Unraid logoUnraidPaidNoSelf-hosted4 of 466.5
2Debian logoDebianOpen sourceYesLinux4 of 452.6
  1. Unraid logo

    1. UnraidTop pick

    Best for: Home media-server builders who want to mix drive sizes and grow storage over time

    PaidSelf-hostableSelf-hosted

    66.5

    score / 100

    Why switch from TrueNAS

    Lets you mix drives of different sizes and add them one at a time, with a big app catalog.

    Pros

    • Mix drives of different sizes and add them one at a time
    • Docker apps and VMs with a large community app catalog
    • Perpetual licence with a free 30-day trial, no card needed

    Cons

    • Paid licence, and cheaper tiers include only one year of updates
    • Array writes are slower than striped RAID or ZFS pools
    • Closed source, unlike TrueNAS or openmediavault
    Visit Unraid Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Unraid a good TrueNAS alternative?

    Verified facts

    4 of 4 verified
    Starting price
    $49 one-time (Starter, 6 devices)
    Checked Nov 1, 2026unraid.net(opens source in a new tab)
    Free trial
    30 days, no credit card
    Checked Nov 1, 2026unraid.net(opens source in a new tab)
    Storage pools
    ZFS, Btrfs, XFS
    Checked Nov 1, 2026unraid.net(opens source in a new tab)
    Apps
    10,000+ apps and plugins
    Checked Nov 1, 2026unraid.net(opens source in a new tab)
  2. Debian logo

    2. Debian

    Best for: People who value a stable, community-governed system for servers or long-lived desktops

    Open sourceLinux

    52.6

    score / 100

    Why switch from TrueNAS

    Build your own file server with ZFS or mdadm, Samba and Docker for full control.

    Pros

    • Very stable, well-tested releases
    • Huge package archive and no corporate agenda
    • Choice of desktops, or a minimal server install
    • Free and community-governed

    Cons

    • Stable releases ship older apps and kernels
    • Less hand-holding during install than Ubuntu or Mint
    • Major releases come only about every two years
    Visit Debian Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Debian a good TrueNAS alternative?

    Verified facts

    4 of 4 verified
    Packages
    70,000+
    Checked Oct 29, 2026debian.org(opens source in a new tab)
    Package manager
    APT
    Checked Oct 29, 2026debian.org(opens source in a new tab)
    Free operating system
    Yes
    Checked Oct 29, 2026debian.org(opens source in a new tab)
    Governance
    Volunteer community
    Checked Oct 29, 2026debian.org(opens source in a new tab)

The best TrueNAS alternative for…

The highest-ranked app in this list for each need.

Unraid logo

Best TrueNAS alternative for most people

Unraid

Lets you mix drives of different sizes and add them one at a time, with a big app catalog.

Debian logo

Best TrueNAS alternative for a free option

Debian

Build your own file server with ZFS or mdadm, Samba and Docker for full control.

Debian logo

Best TrueNAS alternative for open source

Debian

Build your own file server with ZFS or mdadm, Samba and Docker for full control.

Unraid logo

Best TrueNAS alternative for self-hosting

Unraid

Lets you mix drives of different sizes and add them one at a time, with a big app catalog.

Debian logo

Best TrueNAS alternative for Linux

Debian

Build your own file server with ZFS or mdadm, Samba and Docker for full control.

TrueNAS alternatives: common questions

What is the best alternative to TrueNAS?

Unraid ranks first right now. Lets you mix drives of different sizes and add them one at a time, with a big app catalog.

Is there a free alternative to TrueNAS?

Yes. Debian (open source) has a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to TrueNAS?

Yes: Debian.

Which TrueNAS alternatives work on Linux?

Debian runs on Linux.

Why do people switch from TrueNAS?

The complaints we hear most: ZFS pools are less flexible than Unraid for mixing drive sizes; high availability and Fibre Channel need paid Enterprise hardware; steeper learning curve than simpler NAS systems.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces TrueNAS, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.