checksum - checksum is a no-nonsense BLAKE2/SHA1/MD5 hashing tool for Windows.
VSO Inspector - VSO-Inspector is a free add-on to report various information about your hardware configuration.
MacPAR deLuxe - MacPAR deLuxe is a utility program that runs on the Apple Macintosh.
CDCheck - CDCheck can check each of your CDs and DVDs and indicate which files are corrupted.
Par-N-Rar - Par-N-Rar is a graphical utility which accepts a directory as input and will repair/verify any...
Isobuster - Low cost utility to recover data from damaged, scratched, or otherwise defective discs.