Old one, but a good one. This should be an essential part of lots of people's toolbox. It helps you see if a website is really down, or if it's just down because of issues on your own computer.
Thought this was some kind of tinder extension app when I first read the title.
Something that checks if a match is "Down for everyone" or "just [you]"
This is good and very simple (minimalistic).
But it lacks a bit of transparency - there is no info from how many locations a check is performed.
There are similar tools that provide that information.
Hustle X
Hackerpreneur Magazine
Dear Holmes
stoic.
Book Your Sales
LongShorts Stories
Your Browser Is