Originally Posted by MPrince
Yes, Faststone is free, but I find it doesn't do a particularly good job of converting raw files.
Here's a shot I took last year covering an agricultural fair for a local magazine. The version on the left was converted using faststone, the version on the right was converted using PPL. No post-processing was done on either image, just a straight conversion from raw to jpeg.
Camera used was K100D with a Sigma 24mm lens.
In previewing the image, it's smaller than I expected, but I think you can tell the difference easily enough.
I still use faststone for some things, but converting from raw isn't one of them.
But of course, ymmv.
I was throwing it out there as a possibility. Irfanview (already mentioned) is another free program that does it.
I don't use FastStone for anything other than viewing RAW (PEF) files, since Windows can't do it. My RAW converter is the UFRaw plug-in for GIMP. I also prefer to do one image at a time.