Ask HN: Tool to Detect Dead Links

Can you add more detail to the question? A command line tool (which operating system), a web application, a free or paid service that checks one-time or regularly? Links within the website or outside, too?

https://medevel.com/os-broken-link-checkers-to-improve-your-...

Got a blast from the 90ies, where we relied on such tools (usually 10 perl lines)