ImageJ - and Other Health Care
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.
Fiji - Fiji: A batteries-included distribution of ImageJ.
Horos - A free, open source 64-bit DICOM medical image viewer
Icy - Icy is an open community platform for bioimage informatics
3D Slicer - Slicer is a community platform created for the purpose of subject specific image analysis and...