Horos - A free, open source 64-bit DICOM medical image viewer
miniPaint - Online graphics editing tool use HTML5 technologies like Canvas, Offline support, Drag and Drop.
Weasis - Weasis is a multipurpose standalone and web-based DICOM viewer.
JugiPaint - JugiPaint is a painting software with diverse tools for various types of illustration work.
3D Slicer - Slicer is a community platform created for the purpose of subject specific image analysis and...
Ultimate Paint - Ultimate Paint is a full-featured 32-bit Windows graphics program for image creation, viewing and...