TL;DR: I am looking for a web tool, API, program, script can check whether a URL exists in any of the Internet archives. I don't want to have to manually check Web archiving initiatives one at the time.
Background: I'm trying to mitigate link rot (e.g., 10% of the links posted here are dead on stack overflow. How do we deal with them?). I would love to have a web browser extension that can automatically add mirror links to the question/answer/comment being edited. The more of the Internet Archives listed behind the initial links are supported, the better – but I'm already happy if at least on of the major Archives is covered.
I know of this related question: API or library to obtain a mirror of a link, but it's about APIs. I prefer something ready-to-use for the end user. Any price, programming language, operating system, web browser or license is fine.
Reverse question: Archiving an URL on several Web archiving initiatives at once