File-integrity verification with CRC-32, MD5, SHA-1, SHA-2 and SHA-3, integrated into Windows file-properties dialog box.
Cost / License
- Free
- Open Source
Alerts
- Discontinued
Platforms
- Windows
- Windows Explorer




Fast Sum is described as 'Take control of your files' and is an app. There are eight alternatives to Fast Sum for Windows, Linux and File Explorer. The best Fast Sum alternative is HashCheck Shell Extension, which is both free and Open Source. Other great apps like Fast Sum are OpenHashTab, HashMyFiles, CHK Checksum Utility and MD5 & SHA Checksum Utility.
File-integrity verification with CRC-32, MD5, SHA-1, SHA-2 and SHA-3, integrated into Windows file-properties dialog box.




OpenHashTab is a shell extension for conveniently calculating and checking file hashes from file properties.


HashMyFiles is small portable utility that allows you to calculate the MD5 and SHA1 hashes of one or more files in your system.


CHK is an advanced checksum utility — a simple application designed to help you verify the integrity of your files, find duplicates and much more!.

MD5 & SHA Checksum Utility is a tool that allows you to generate CRC32, MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of single or multiple files. You can also verify hashes with the matching file to ensure the file integrity is correct.



FileVerifier++ is a Windows application for verifying the integrity of files. FileVerifier supports various algorithms by means of dynamically loadable hash libraries. It uses the Windows API and doesn't have any dependencies other than what comes with Windows (WinFVC...








This tool will generate hash strings to validate directories and files, in the same vein as hashdeep or fciv. I wrote it after giving up trying to find a decent tool to validate my backups. Although many tools like the two previously mentioned will generate hash files for...