RAW image file is a file saved by a digital camera, image scanner or motion picture film scanner. RAW file saves data without making modifications to the picture when captured. The data saved within the raw file is lossless and can be accessed by specific programs call RAW file Viewers. Camera Raw files are heavy in size, and Raw file viewer takes some time for opening it. A better editing of the Raw file makes a better photographer. Most of the Raw file viewers have the ability to make some modifications to the raw images and convert them to simple image formats. Major Raw file viewer applications can read edit Raw files captured from Canon, Aptus, Epson, Hasselblad, Fuji, Kodak, Leica, Mamiya, Nikon, Olympus, Pentax, Panasonic, Ricoh, Samsung, Sigma and Sony Cameras. For users ease, we have compiled a list of best free Raw File Viewer Software. Most of these applications have inbuilt image editing tools. Few applications are extensively built to edit the Raw images in complete editing modes like that of Adobe Photoshop or Adobe Lightroom.