Website benchmarking (ie answering the question "How well is my website performing") is obviously an extremely complex and subjective question. But what if you just need to test various aspects of your website quickly? Here's some of the tools that I use regularly (to be updated over time):
- Domain DNS Settings - https://who.is/dns/: Gives you a quick overview of what services (web hosting, email hosting etc) are being managed where if you know what you're looking for....
- Link Checker - W3C link checker tool