The NRW file extension is associated with the Nero Burning ROM CD/DVD authoring and burning software for Windows and Linux. The *.nrw file stores burning parameters and references to WMA (Windows Media Audio) audio data used to burning audio compilation.
Raw image file produced by high-end Nikon COOLPIX and digital SLR cameras; saves image data in an uncompressed format that can be processed on the camera or on a computer after the images is captured; similar to the previous .NEF format, but is designed to support Windows Imaging Component (WIC) functions.