If you find the Pro version too heavy for your needs, the developer also offers a completely free version called "Integrity" which handles basic link checking perfectly!
If you are looking for an official way to get (a premium tool for website link checking and SEO auditing) for Mac, it is important to note that it is paid software. However, you can draft a post or description that highlights how to access it legitimately. Integrity Pro 10 for Mac: The Ultimate Website Health Tool Integrity Pro 10 for Mac Free Download
Identifies missing title tags, meta descriptions, and thin content. If you find the Pro version too heavy