This used to be the best for finding out what was running behind a website, besides FOCA Pro, but now the new title is held by Wappalyzer, since WhatRuns has not been updated in 3 years.

Only works half of the time

Only shows "Javascript Infovis Toolkit" in react

Fonctionne mal, détecte pas les bonnes technologies utilisées. Et parfois fonctionne pas du tout

Wrongly suggested Hugo instead of jekyll...
For malariamuseum.netlify.com

Also it seems to randomly assume React and a bunch of other JS libraries....