I'm always looking for DICOM tools to use in practice and for training purposes. After some searching on the web I've located some links to free DICOM tools that could be usefull. I did not test them all so I'm not sure of the quality of the tools, but here they are (if you notice broken links or tools that are not free (anymore) please let me know).
DicomCleaner is a free open source tool with a user interface for importing, "cleaning" and saving sets of DICOM instances (files). It can: Import files from a CD or the local hard drive or a shared network drive or any other media, with or without a DICOMDIR, Query and retrieve from remote DICOM devices, "Clean" the DICOM "header" of a selected set of instances, Blackout burned in annotations in the pixel data of the cleaned files, Export the cleaned instances to a folder with a DICOMDIR, which can be burned to a CD or DVD, Send the cleaned instances over the network to a remote DICOM device