PeaUtils is a suite of file management tools, from the authors of PeaZip that allows for secure deletion, hashing, file splitting/joining and more.

The goal with this utility was to group various file management tools in a very simple GUI that will be easy-to-use for anyone. All the management options are contained within a drop down which includes byte to byte comparisons, secure deletion of free space/files, split/merge spanned volumes, hex previews for files, calculate file checksum/hash, including CRC32, CRC64, MD5, SHA1, SHA256, SHA-3_256, and more.