Raw Decoder performs a real raw decoding with almost any Camera-Raw format.
You can open your raw files and save them as tiff (8 or 16 Bit) or Jpg.
If you're looking for an application which also allows you to "develop" and edit Raw-Images, take a look at Photo Mate R2.
In comparision to other apps, this one is the only one which performs a decoding of real raw data instead of just reading the embedded jpg-thumbnail.
Current supported formats include:
Canon Raw (cr2,crw), Adobe DNG (dng), Nikon Raw (nef), Sony Raw (arw), Olympus Raw (orf), Epson Raw (erf), Hasselblad Raw (3fr), Phase One Raw (iiq), Pentax Raw (pef), and even more...
Every image will be previewed as an color-image with half-resolution of your raw (for performance and memory reasons). However, you can decode the full size to tiff or jpg.
Tags: Image Viewer, Raw-Images, Picture Viewer