I'm looking for an online service that will periodically (daily) check for broken links on my site (~100 pages). I see lots of tools that you can download and run, and indeed have used such tools in the past. But this seems like an obvious task for an online service: sign up, tell it my URL, then it would only email me if there are more broken links today than there were yesterday.
My organisation's web site is not our major focus, and it's only a small part of my job. Hence the need to completely automate tasks where possible.