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OsiriX MD alternatives: 3 apps ranked by verified data

Facts checked Nov 1, 2026AppBreakup editorialHow we rank

Common reasons people leave OsiriX MD: runs only on Apple hardware, and subscription pricing adds up compared with free viewers. We ranked 3 alternatives by how directly each one replaces OsiriX MD, then by reviews, real visits and how recently each app's facts were checked against its own website. Horos currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Horos logoHorosOpen sourceYesmacOS4 of 454.5
2Weasis logoWeasisOpen sourceYesWindows, macOS, Linux5 of 552.2
3RadiAnt DICOM Viewer logoRadiAnt DICOM ViewerPaidNoWindows5 of 550.3
  1. Horos logo

    1. HorosTop pick

    Best for: Mac users who want a free OsiriX-style DICOM workstation

    Open sourcemacOS

    54.5

    score / 100

    Why switch from OsiriX MD

    Free open-source fork with a very similar interface, for users who don't need a certified device.

    Pros

    • Free and open source under LGPL 3.0
    • Full workstation with database, PACS and 3D rendering
    • Familiar workflow for former OsiriX users

    Cons

    • macOS only
    • Not certified for clinical diagnosis
    • Release cadence is slow compared with commercial viewers
    Visit Horos Details and reviews
    How this score is calculated
    Editorial fit ×0.360
    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 Horos a good OsiriX MD alternative?

    Verified facts

    4 of 4 verified
    License
    LGPL-3.0
    Checked Nov 1, 2026github.com(opens source in a new tab)
    Platform
    macOS
    Checked Nov 1, 2026github.com(opens source in a new tab)
    Based on
    OsiriX
    Checked Nov 1, 2026github.com(opens source in a new tab)
    Price
    Free
    Checked Nov 1, 2026github.com(opens source in a new tab)
  2. Weasis logo

    2. Weasis

    Best for: Hospitals, researchers and clinicians who want a free DICOM viewer that plugs into PACS and web portals

    Open sourceWindows, macOS, Linux

    52.2

    score / 100

    Why switch from OsiriX MD

    Free cross-platform viewer that integrates with PACS and web portals, without the subscription.

    Pros

    • Free and open source under EPL 2.0 or Apache 2.0
    • PACS and DICOMweb query, retrieve and send built in
    • MPR and 3D volume rendering alongside 2D reading
    • Desktop installers for Windows, macOS and Linux

    Cons

    • Integration settings are aimed at IT staff, not casual users
    • Less polished interface than commercial workstations
    • Only the native-installer edition is maintained since version 4
    Visit Weasis Details and reviews
    How this score is calculated
    Editorial fit ×0.352
    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 Weasis a good OsiriX MD alternative?

    Verified facts

    5 of 5 verified
    License
    EPL 2.0 or Apache 2.0
    Checked Oct 29, 2026github.com(opens source in a new tab)
    Platforms
    Windows, macOS, Linux
    Checked Oct 29, 2026github.com(opens source in a new tab)
    PACS integration
    PACS and web archives
    Checked Oct 29, 2026weasis.org(opens source in a new tab)
    Offline mode
    Yes
    Checked Oct 29, 2026weasis.org(opens source in a new tab)
    3D and MPR
    Yes
    Checked Oct 29, 2026weasis.org(opens source in a new tab)
  3. RadiAnt DICOM Viewer logo

    3. RadiAnt DICOM Viewer

    Best for: Windows users who want a quick, easy viewer for CT, MR and X-ray studies from discs or PACS

    PaidWindows

    50.3

    score / 100

    Why switch from OsiriX MD

    A lighter, fast Windows viewer for practices that don't run Macs.

    Pros

    • Fast and simple interface for opening studies
    • PACS query and retrieve plus a local study archive
    • 3D MPR and volume rendering included
    • CD/DVD edition for distributing studies to patients

    Cons

    • Windows only
    • Time-limited subscription; access ends when the plan expires
    • No FDA or CE certification, so not for diagnosis
    Visit RadiAnt DICOM Viewer Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    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 RadiAnt DICOM Viewer a good OsiriX MD alternative?

    Verified facts

    5 of 5 verified
    Starting price
    €39 per PC/year
    Checked Oct 30, 2026radiantviewer.com(opens source in a new tab)
    Licence type
    Time-based subscription
    Checked Oct 30, 2026radiantviewer.com(opens source in a new tab)
    Platforms
    Windows 7 to 11
    Checked Oct 30, 2026radiantviewer.com(opens source in a new tab)
    PACS client
    Yes
    Checked Oct 30, 2026radiantviewer.com(opens source in a new tab)
    Certification
    None (not for diagnosis)
    Checked Oct 30, 2026radiantviewer.com(opens source in a new tab)

The best OsiriX MD alternative for…

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

Horos logo

Best OsiriX MD alternative for most people

Horos

Free open-source fork with a very similar interface, for users who don't need a certified device.

Weasis logo

Best OsiriX MD alternative for a free option

Weasis

Free cross-platform viewer that integrates with PACS and web portals, without the subscription.

Horos logo

Best OsiriX MD alternative for open source

Horos

Free open-source fork with a very similar interface, for users who don't need a certified device.

Horos logo

Best OsiriX MD alternative for Mac

Horos

Free open-source fork with a very similar interface, for users who don't need a certified device.

RadiAnt DICOM Viewer logo

Best OsiriX MD alternative for Windows

RadiAnt DICOM Viewer

A lighter, fast Windows viewer for practices that don't run Macs.

Weasis logo

Best OsiriX MD alternative for Linux

Weasis

Free cross-platform viewer that integrates with PACS and web portals, without the subscription.

OsiriX MD alternatives: common questions

What is the best alternative to OsiriX MD?

Horos ranks first right now. Free open-source fork with a very similar interface, for users who don't need a certified device. Weasis and RadiAnt DICOM Viewer follow it in our ranking.

Is there a free alternative to OsiriX MD?

Yes. Horos (open source) and Weasis (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to OsiriX MD?

Yes: Horos and Weasis.

Which OsiriX MD alternatives work on Linux?

Weasis runs on Linux.

Why do people switch from OsiriX MD?

The complaints we hear most: runs only on Apple hardware; subscription pricing adds up compared with free viewers; free Lite version marks images as not for medical use.

How is this list ranked?

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