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A comprehensive and professional DICOM viewer

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Onis is a powerful and comprehensive application which lets you open and view DICOM image files. The program supports all the medical equipment manufacturers and modalities. This medical application can be easily adapted to your needs and will help you improve your workflow.

Onis comes with an advanced set of features, MIP volume rendering, double oblique MPR, a strong and dynamic system of annotations, various reports, and more. The application also lets you remotely access your images and is able to display image files directly from a server.

ONIS integrates a sophisticated plugin architecture, being able to meet all your needs and requirements. You can adapt the program according to your needs and personalize it to math your workflow. In addition, an interactive annotation system is included.

ONIS includes a powerful printing and reporting feature which will let you easily write, read, edit and verify various reports for each study. You can print the reports or save them into the database.


  • The application can be customized to match your workflow.
  • The program lets you remotely access DICOM images.


  • The free version supports maximum 15 patients.
  • The free edition does not support multiple monitors.
Name Onis
Developer | see all products from this developer
Product Homepage Onis
License Free (Freeware)
Last Week Downloads 5
All Time Downloads 3,937
Filename Onis25FreeEdition.msi
Filesize 13.9MB
MD5 Checksum 6A9738871D0CA6B0784407CC818CEEED
OS Support Windows All
Category Home & Education

100% CLEAN Certification

BadgeOnis has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
Onis October 28, 2016 - Latest Version
Onis 2.5 April 05, 2014
Onis 2.3 March 21, 2011

Download the free Onis