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DICOM (Digital Imaging and Communications in Medicine) is the international standard to transmit, store, retrieve, print, process, and display medical imaging information.

The Following is a list of the best free DICOM Viewers for Doctors.

1- Navegatium DICOM Viewer:

Incredibly easy to use, Navegatium has an absolutely intuitive touchscreen interface, works perfectly on Windows 10 and Windows 8.1 tablets, laptops and PCs and can be installed directly from Windows Store.
It is capable of 2D, 3D and X-Ray reconstructions with DICOM images.

2- Sante DICOM Viewer Free:

Sante DICOM Viewer Free can be used as a stand-alone desktop application, but also it is suitable for DICOM CD/DVD distribution. It runs from CD/DVD without installation, it does not have any additional software requirements like .NET or Java run-time libraries, and opens automatically the DICOMDIR file in the root of the CD/DVD.
Sante DICOM Viewer Free supports all the modalities (CT, MR, US, CR, NM, XA, MG, DX etc.), all the manufacturers, and all the DICOM file types (DICOM 3.0/NEMA 2).

3- MicroDicom:

MicroDicom is an application for primary processing and preservation of medical images in DICOM format.
It is equipped with most common tools for manipulation of DICOM images and it has an intuitive user interface. It is free for non-commercial use.

4- Horos DICOM Project Review:

Horos is a free, open source medical image viewer. The goal of the Horos Project is to develop a fully functional, 64-bit medical image viewer for OS X. Horos is based upon OsiriX and other open source medical imaging libraries. Horos is made available under the GNU Lesser General Public License, Version 3 (LGPL-3.0).

5- JiveX DICOM Viewer:

This free DICOM Viewer offers not only to review radiology images but also other types of medical data such as ECGs or information in pdf files – as long as the data is available in DICOM format. Thus the DICOM Viewer provides all users with access to important information far beyond radiology.
Data can be loaded onto the Viewer from an internal folder or from external media such as CD, DVD or stick. Unlike the licensed Review Client the free DICOM Viewer cannot be linked to the PACS. Technical service is not included.
It is available for non-commercial use (research or educational purposes).

6- AMIDE:

AMIDE is a completely free tool for viewing, analyzing, and registering volumetric medical imaging data sets.

7- 3DimViewer:

3DimViewer is a lightweight 3D viewer of medical DICOM datasets that is distributed as open source software.

8- postDICOM:

postDICOM is a secure environment for patients, doctors, clinics and hospitals. Using postDICOM, users can Post medical DICOM images (computed tomography, magnetic resonance imaging, ultrasound, digital radiography etc.) and clinical documents (scanned documents, reports, patient’s history etc.) to cloud. Later, users can view and share these documents with doctors and medical groups. Uploaded DICOM files are streamed using sophisticated HTML5 zero footprint lossless DICOM viewer.

9- SMILI:

The Simple Medical Imaging Library Interface (SMILI), is an open-source, light-weight and easy-to-use medical imaging viewer and library for all major operating systems. The main sMILX application features for viewing n-D images, vector images, DICOMs, anonymizing, shape analysis and models/surfaces with easy drag and drop functions. It also features a number of standard processing algorithms for smoothing, thresholding, masking etc. images and models, both with graphical user interfaces and/or via the command-line.

10- Mango:

Mango – short for Multi-image Analysis GUI – is a viewer for medical research images. It provides analysis tools and a user interface to navigate image volumes.
Mango is available for use, as is, free of charge, for educational and scientific, non-commercial purposes.

11 - aeskulap

Aeskulap. is a very famous DICOM mmanager/ and viewer on Ubuntu/ Debian linux.
Platform : Linux

http://aeskulap.nongnu.org/

Update

12 - NextCloud : Cloud based DICOM Viewer.

NextCloud is a free, open source self-hosted cloud file sharing solution, It provides security, solid user management and set of desktop and mobile clients which support synchronisation. NextCloud AppStore has DICOM viewer which is full featured DICOM viewer ready to work for teams and hospitals.

NextCloud : Cloud based DICOM Viewer

Review : NextCloud : Free & open source self-hosted cloud files sharing and healthcare ready platform

  • Platforms : Server : Linux, Clients : Mac OSX, Windows, Linux. Mobile Apps Android and iPhone, web browsers desktop and mobile.

Hospital Information Systems (HIS)/ EMR with DICOM viewer

Some Hospital Information systems are built with DICOM viewer to ensure the usability for DICOM files. Here is a list of  free open source hospital information systems some comes with complete DICOM and PACS integration.

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