Horos - A free, open source 64-bit DICOM medical image viewer
Weasis - Weasis is a multipurpose standalone and web-based DICOM viewer.
MicroDicom - DICOM viewer. MicroDicom is a free DICOM viewer. Export to the most common picture formats, movie, clipboard. It is equipped with most common tools for manipulation of DICOM images.
RadiAnt DICOM Viewer - PACS-DICOM Viewer. RadiAnt is a PACS-DICOM viewer for medical images designed to provide you with a unique experience.
3D Slicer - Slicer is a community platform created for the purpose of subject specific image analysis and...
Vesalius3D - Vesalius3D is a toolkit for visualization of patient specific anatomy