VexMap

Eight (!) weeks of on-again, off-again development has brought VexMap from a half formed idea to a tool that seems really valuable.
VexMap was inspired by a case study in Kevin Conti's excellent Software Ideas newsletter. It combines automatic, real time error reporting (like honeybadger, rollbar, etc) and UX monitoring (like Fullstory or HotJar) into a dashboard that shows potential trouble spots on your site.
By monitoring signs of user frustration, VexMap can show you areas of your site that don't behave as users expect.