iRad 
iRad is a DICOM viewer exclusively written for MacOSX. xRad DICOM storage server based on dcmtk included.
http://irad.sourceforge.net/NIH Image
Download and documentation for public domain image processing and analysis program developed for the Macintosh by the US National Institute of Mental Health.
http://rsb.info.nih.gov/nih-image/
Idoimaging.com
A searchable database of free applications, with details of platforms, authors, and versions.
http://www.idoimaging.com
DicomWorks
Offers a DICOM viewer with the ability to import images from several formats. Includes screenshots, forum, and registration details.
http://dicom.online.fr/
(X)Medcon
An open source conversion tool, with FAQ, project details, and documentation.
http://xmedcon.sourceforge.net/
Aeskulap DICOM Viewer
Cross-platform imaging workstation and PACS client, with downloads, screenshots and product news.
http://aeskulap.nongnu.org/
K-PACS
Offers a free, Windows-based DICOM viewer and PACS client/server, with product details, screenshots, and user forum. [English and German]
http://www.k-pacs.net/
Laurel Bridge
Produces DICOM software and applications, with product descriptions, user manuals, and support documents to download.
http://www.laurelbridge.com
DeJarnette Research Systems
Provides DICOM toolkits, PACSware solutions, and data migration tools for OEM and end-user markets.
http://www.dejarnette.com
LEAD Technologies, Inc
Offers medical imaging SDKs for DICOM data manipulation, with toolkit details and free trial version to download.
http://www.leadtools.com/SDK/Medical/Medical-Products-n.htm
