ShaSearch 1.3.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software for Mac OS X is an intellectual property of rase.rocks. The program lies within System Tools, more precisely File Managers.
From the developer:
ShaSearch is a simple application to find files that match a given SHA hash. SHA256 and SHA512 are both supported. The utility is useful when using a SHA hash to keep track of the integrity of files that are distributed with others. ShaSearch can also be used to create SHA hashes of any file type. In addition, the tool helps you search your Mac for duplicates of a specific file or compare every byte of a file for equality against another.
You may want to check out more software for Mac, such as ImTOO DVD to MP4 Converter, getTunes or SharePoints AutoMounter, which might be similar to ShaSearch.