Horos alternatives: 4 apps ranked by verified data
Common reasons people leave Horos: macOS only, and not certified for clinical diagnosis. We ranked 4 alternatives by how directly each one replaces Horos, then by reviews, real visits and how recently each app's facts were checked against its own website. Weasis currently ranks first.
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Show all 4 alternativesThe best Horos alternative for…
The highest-ranked app in this list for each need.
Best Horos alternative for most people
WeasisFree, open source and cross-platform, with strong PACS and DICOMweb integration for mixed Mac and PC sites.
Best Horos alternative for a free option
3D SlicerFree and runs natively on Apple Silicon, with far more segmentation and research tooling.
Best Horos alternative for open source
WeasisFree, open source and cross-platform, with strong PACS and DICOMweb integration for mixed Mac and PC sites.
Best Horos alternative for Mac
OsiriX MDThe commercial original Horos was forked from, with FDA clearance and faster performance for clinical reading.
Best Horos alternative for Windows
RadiAnt DICOM ViewerFast, simple paid viewer for users who are moving from a Mac to Windows.
Best Horos alternative for Linux
WeasisFree, open source and cross-platform, with strong PACS and DICOMweb integration for mixed Mac and PC sites.
Horos alternatives: common questions
What is the best alternative to Horos?
Weasis ranks first right now. Free, open source and cross-platform, with strong PACS and DICOMweb integration for mixed Mac and PC sites. 3D Slicer and RadiAnt DICOM Viewer follow it in our ranking.
Is there a free alternative to Horos?
Yes. Weasis (open source) and 3D Slicer (open source) have a free option. Check each app's verified facts for current plan limits.
Is there an open-source alternative to Horos?
Yes: Weasis and 3D Slicer.
Which Horos alternatives work on Linux?
Weasis and 3D Slicer run on Linux.
Why do people switch from Horos?
The complaints we hear most: macOS only; not certified for clinical diagnosis; release cadence is slow compared with commercial viewers.
How is this list ranked?
Every app is scored with the same published formula: how directly it replaces Horos, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.