Ginkgo CADx is described as 'multiplatform (Windows, Linux, Mac OSX) DICOM viewer and dicomizer. Ginkgo CADx is based in free software (Open Core), so you are free to use and distribute the Open Source version with no cost'. There are more than 10 alternatives to Ginkgo CADx for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and iPhone. The best alternative is InVesalius 3, which is both free and Open Source. Other great apps like Ginkgo CADx are RadiAnt DICOM Viewer (Freemium), MicroDicom (Free), Horos (Free, Open Source) and Weasis (Free, Open Source).
Weasis is a multipurpose standalone and web-based DICOM viewer with a highly modular architecture. It is a very popular clinical viewer used in healthcare by hospitals, health networks, multicenter research trials, and patients.
Miele-LXIV is a DICOM workstation, viewer and more. The project started in November 2014 as a fork of the popular open source 32-bit project OsiriX, but it has been modified to become a 64-bit application and to remove many of the limitations of the 32-bit version.
Aeskulap is a medical image viewer capable to load a series of special images stored in the DICOM format for review, query and fetch DICOM images from archive nodes (also called PACS) over the network.
Materialise Mimics is software specially developed by Materialise for medical image processing. Use Mimics for the segmentation of 3D medical images (coming from CT, MRI, micro-CT, CBCT, 3D Ultrasound, Confocal Microscopy).