Hash-Hash

Hash-Hash is a lightweight and portable application that you can use to calculate and compare the various checksums of files, regardless of their format. It offers support for CRC32, MD4, MD5 and SHA1.
The utility comes bundled with advanced options that are intuitive enough to be figured out not only by experienced users, but also by beginners.

Portability advantages

The entire tool's wrapped in a single .exe file that you can save in any part of the hard disk or copy to a USB flash drive, in order to seamlessly run it on any PC without previous setup. No changes are made to the system registry and no files are created on the disk without your permission. It doesn't need any DLLs to run.

Calculate and compare file checksums

When it comes to the interface, Hash-Hash adopts a standard window with a clear-cut layout, where you can add a file to immediately find out its CRC32, MD4, MD5 and SHA values. These can be saved to file by specifying the name, output directory and format between .sfv, .md4, .md5 and .sha1.
In order to compare two hashes, you can either load a second file or paste Clipboard contents in the dedicated box. Results indicate whether the corresponding files are identical or different, in addition to the file name and checkup time.

Evaluation and conclusion

We haven't come across any stability issues in our tests, thanks to the fact that the utility didn't freeze, crash or prompt error messages. It calculated and compared file signatures rapidly while using a low amount of CPU and RAM, so it didn't hamper PC performance.
Although it hasn't received updates for a long time, it worked smoothly on newer Windows editions in our tests. All in all,
Hash-Hash offers a speedy solution for calculating and comparing various file checksums.