Duplicate Media Finder - Duplicate Media Finder locates and deletes identical files and similar media
Toolsley CRC MultiTool - Verify CRC on multiple files, create SFV files or validate against SFV files instantly in the browser using JavaScript. No need to install anything, just drag & drop. Supports CRC in the filename.
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
QuickSFV - QuickSFV integrates into the Windows Explorer shell and makes it very easy to verify files.
Duplicate Cleaner - Duplicate Cleaner: the fastest and most popular tool for finding duplicate files. Over 1 million downloads: Get your copy now! Free and Pro versions available.
HashMyFiles - HashMyFiles is small utility that allows you to calculate the MD5 and SHA1 hashes of one or more files in your system.