Best DICOM viewers
Apps for opening, reading and analysing medical images such as CT, MR, X-ray and ultrasound studies in the DICOM format.
4 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All DICOM viewers
- Alternatives to Weasis

Free, open-source DICOM viewer for medical images that connects to hospital PACS systems.
Open sourceWindows, macOS, Linux - Alternatives to Horos

- Alternatives to RadiAnt DICOM Viewer

Fast Windows DICOM viewer with PACS client, 3D views and a CD/DVD edition.
PaidWindows - Alternatives to 3D Slicer

Free, open-source platform for viewing, segmenting and analysing medical image data.
Open sourceWindows, macOS, Linux
Our picks by need
Common questions
What are the best DICOM viewers?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading DICOM viewers right now are Weasis, Horos, RadiAnt DICOM Viewer and 3D Slicer.
Are there free DICOM viewers?
Yes. Weasis (open source), Horos (open source) and 3D Slicer (open source) have a free option, out of 3 free or freemium apps we track.
Which DICOM viewers are open source?
Weasis, Horos and 3D Slicer.