For raw processing, not camera produced JPEGs.
Are there differences in the demosaicing algorithms used by various raw processing programs (Adobe Camera Raw, Apple Aperture/iPhoto, Canon's DPP, Capture One, DxO, Hasselblad Phocus, Iridient Developer, Nikon's Capture NX programs, and the similar Sigma and Sony applications, etc.) or is the demosaicing color interpolation done or set by a camera's internal image processor as part of the raw file?