I discovered TripleChecker recently, when they did a freebie intro scan of my site and found a whole bunch of typos and broken links.
Their interface makes it easy to see what’s wrong, and links to the page with the problem. Super helpful at keeping your site clean, professional, and functioning as it should. Have it check your website monthly (up to 1000 pages) for $14.99/month, or weekly (up to 2,500 pages) for $19.99/month.
Sure, you can manually do a crawl test regularly with something like Screaming Frog to find the broken links, and you can go page by page and feed the text into a tool like Grammarly, but this wraps it all in a neat package that you don’t have to remember to do each month. I liked it enough, I added it to my Resources menu, and to my standard set of site audit recommendations.