Where to download OsiriX Lite (Mac)
- Go to the OsiriX Lite download page on osirix-viewer.com and choose New User.
- Fill in the form. When we checked on 13 November 2026 it asked for an email address (twice), your professional activity and your country, and for agreement to its disclaimer.
- Check your Mac: OsiriX runs on macOS 12 to macOS 27, on Intel and Apple silicon processors, and needs at least 6 GB of RAM.
- Install it and import the disc.
What the demo limits. OsiriX describes Lite as the complete demo version of OsiriX MD. Compared with OsiriX MD it displays a “NOT FOR MEDICAL USAGE” tag on all images, runs at standard speed where OsiriX MD is described as up to 80% faster, and is limited to two DICOM nodes. Its disclaimer says the software is not intended for primary diagnostic use. OsiriX MD, the certified version, is sold from $69.99 a month.
The download page does not state a version number.
Is there an OsiriX for Windows?
No. The OsiriX MD page states that OsiriX can only be installed on an Apple Mac and can only run on Apple's operating systems. On a Windows PC you need a different viewer. These are the ones we checked on 13 November 2026:
The viewer program that comes on a hospital disc is usually a Windows program too, so on a PC it is worth trying first; it often fails to start on a current computer, which is when one of the viewers above helps (every way to open a scan disc).
How to open a scan disc on Windows with SlideScope
- Install SlideScope for Windows 10 or 11; it also runs on macOS 14 or later. The download is free, and the built-in sample library, which includes a real, de-identified chest CT, is free with every tool; opening your own scans needs a subscription.
- On the Home screen, click Got a scan on a CD or USB? Open it. SlideScope finds the disc by its DICOMDIR index and lists each series once. You can also open the DICOMDIR file on the disc directly, or a single
.dcm file.
- Open a series and scroll through the slices. For a CT, switch to the soft tissue, lung, bone or brain window from the window menu.
- Measure distances in millimetres. To keep the scan after the disc goes back, choose Copy this scan to your computer.
SlideScope shows the slices as the scanner stored them: it does not rebuild other planes or 3D views. Medical scans stay on your computer and are never sent to AI, saved to the cloud or shared by link. It is for viewing and measuring, not for diagnosis; the radiologist's report and your doctor explain what a scan shows.
OsiriX Lite and SlideScope compared
OsiriX facts come from the OsiriX website, checked on 13 November 2026; see the sources below.
When OsiriX Lite is the better choice
If you have a Mac and want to look at your own scan without paying, OsiriX Lite is free, and it is the viewer its makers point patients to. It is the complete demo of OsiriX MD, a program certified for diagnostic imaging, so it goes further than SlideScope does. If you have a Windows PC, OsiriX is not an option: MicroDicom is free for non-commercial use, and Weasis is free on every system. SlideScope fits when you want a plain viewer that finds the disc, opens each scan as one stack and copies it to your computer, with no tag on the images, on Windows or on a Mac.
OsiriX Lite questions
Is OsiriX Lite free?
Yes. OsiriX offers Lite as the free demo of OsiriX MD. It displays a “NOT FOR MEDICAL USAGE” tag on all images and is limited compared with OsiriX MD.
Where can I download OsiriX Lite?
From the OsiriX Lite download page on osirix-viewer.com. New users fill in a short form with an email address, professional activity and country, and agree to a disclaimer.
Is there an OsiriX or OsiriX Lite for Windows?
No. OsiriX states that it can only be installed on an Apple Mac. On Windows, use MicroDicom, Weasis, RadiAnt or SlideScope.
Which macOS does OsiriX Lite need?
The OsiriX website lists macOS 12 to macOS 27, on Intel and Apple silicon processors, with at least 6 GB of RAM.
What is the difference between OsiriX Lite and OsiriX MD?
OsiriX MD is the paid version, cleared by the FDA and CE labelled for diagnostic imaging. OsiriX Lite is its free demo: it tags every image “NOT FOR MEDICAL USAGE”, runs at standard speed and is limited to two DICOM nodes.
Is SlideScope free?
No. SlideScope is a paid app. The download and the built-in sample library, which includes a real chest CT, are free with every tool. Opening your own scans needs a subscription; current prices are on the plans page.
Is my scan uploaded when I open it in SlideScope?
No. SlideScope opens DICOM files from your own disk, on your own computer. A medical scan such as a CT, MRI or X-ray is never sent to AI, saved to the cloud or shared by link.
Can SlideScope tell me what my scan shows?
No. SlideScope is for viewing and measuring, not for diagnosis. The radiologist's report and your doctor explain what a scan shows.
Sources and non-affiliation note
SlideScope is independent and is not affiliated with, endorsed by, or sponsored by the makers of OsiriX or the makers of the other viewers named here. Product names are used only to describe comparison and alternative search intent. Facts were taken from each maker's own pages on 13 November 2026:
Try it on a real CT first
The free sample library includes a real, de-identified chest CT, so you can scroll, change the window and measure before opening your own disc. Your own scans need a subscription. Already decided? Subscribe now.