
kdiff3
Beyond Compare
WinMerge
Meld
Araxis Merge
DiffMerge
P4Merge
Devart Code Compare
3DimViewer
Horos
MicroDicom
Weasis
AMIDE
Miele-LXIV
RadiAnt DICOM Viewer
3D Slicer
kdiff3Beyond Compare - Beyond Compare allows you to compare files and folders.
Horos - A free, open source 64-bit DICOM medical image viewer
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
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.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Weasis - Weasis is a multipurpose standalone and web-based DICOM viewer.