checksumJack-0.4.4.tar.gz (Source Code here / C++ / Qt5)
Computes and verifies cryptographic hash digest from any file. It runs on multiple platform and is distributed under the GPLv3.0+. You are welcome to download it for free.
Supported hash algorithm:
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/)