CopyCatX is a backup software product produced by SubRosaSoft.com Inc. The software uses byte and block-level copying to make exact duplicates of devices and volumes.Byte and block-level copying offer speed advantages over traditional file-copying used by most duplication and backup software. It also maintains every detail of the duplicated device such as icon placement, file permissions, and hidden files that file-copying often misses.CopyCatX is device and file system independent.