Rawzor is proprietary application that compresses many types of "raw" image files produced by digital cameras.
The compressed file format is known as RWZ, Rawzor, or Rawzored.
The compression is lossless. Every byte of the original file will be recovered after decompression. It is apparently not a general-purpose file compression utility, though, as it does not work with all files.
RWZ files apparently begin with the ASCII signature "
- http://www.rawzor.com/developers/ → Sample RWZ Images