The dump package contains both dump and restore. Dump examines files in a filesystem, determines which ones need to be backed up, and copies those files to a specified disk, tape or other storage medium. The restore command performs the inverse function of dump; it can restore a full backup of a filesystem. Subsequent incremental backups can then be layered on top of the full backup. Single files and directory subtrees may also be restored from full or partial backups.
Duplicate Files Searcher is an application for finding and deleting duplicate files on your computer. It can also be used to calculate MD5 and SHA hashes. It has features such as manual files selection (giving the user full control over files to be deleted), byte for byte file comparison, file preview, several file comparison methods, and more.
EVP dirdiff is a tool that recursively compares two directory trees using MD5 hash function. The depth of the directory tree can be limited, and the two directories can optionally be synchronized. MD5 file hashes are printed. File names can be enclosed in the characters of your choice.