UFRaw

The Unidentified Flying Raw (UFRaw) is a plug-in to read and manipulate raw images from digital cameras and to load them into the Gimp. UFRaw reads raw images using Dave Coffin's raw conversion utility - DCRaw. UFRaw supports color management workflow based on Little CMS, allowing the user to apply ICC color profiles.
Homepage: http://ufraw.sourceforge.net/
User guide: http://ufraw.sourceforge.net/Guide.html
Installer for MS-Windows: http://ufraw.sourceforge.net/Install.html#MS