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- K-PACS is a great DICOM viewer which is pretty much a free replacement of eFilm.
- If you're using a Mac, you really can't go wrong with the open source Osirix application. It is an extremely sophisticated, full featured application for viewing and manipulating medical images.
- Aeskulap is a free DICOM reader for Linux that can Query/Fetch from a PACS system. I tested this with dcm4chee-2.10.13 running on a Linux-2.6.18 server and it worked
- Evan - Clear Canvas Workstation is a free DICOM viewer for Windows that's open source and written in .NET
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