kradview is a viewer of images obtained for some different sources: X-ray, NMR and all DICOM-compatible imaging devices. Its aim is to be a complete platform for medical imaging and imageprocessing.
palbum is a perl script which turns a directory (or directory hierarchy) full of images into a nice image gallery. It generates thumbnails and index.html files, and requires no configuration. It uses the ubiquitous netpbm library for imageprocessing.