1. NAME - LINK
URI Valet - [urivalet.com...]
Provides full technical audit of a URI
3. FREE or PAID
4. WHAT I LIKE
Beautifully designed and integrated tool, with superb interface, pulling together a range of information otherwise requiring multiple tools. Includes server header checks, user agent selection, head summary, load times, object details, internal and external link verification, source code, various page views, links to validator. Even provides reference links to server header responses.
5. WHAT NEEDS IMPROVING
I suppose it would be guilding the lilly to ask for formatted data export ;) ...but that's about all this tool lacks.