Downloading zsCompare 3.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely File Managers. This Mac application is a product of Zizasoft, LLC. 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.
From the developer:
zsCompare, the award winning file comparison utility from Zizasoft, allows you to manually or automatically compare and synchronize files, folders, zip files, and jar files between local directories or networked computers. You can also compare the contents of text files line by line, and then merge the files to include only the changes you want.
You may want to check out more software for Mac, such as pdf-FieldMerge, which might be similar to zsCompare.
File Managers
File Managers