Name: Gingko CADx
License: Lesser GNU Public Licence 3
Description: "Ginkgo CADx is an advanced DICOM viewer and dicomizer that can also be used to convert png, jpeg, bmp, pdf, tiff to DICOM files."
Note: This is a medical imaging application and is probably best categorized under Science Software > Medicine. I primarily need it for viewing DICOM files. Unfortunately, http://www.osirix-viewer.com/ is not available for Linux-based operating systems and I haven't tried this one. Please let me know if you know of any better, well-maintained alternative.