https://jsonresume.org/projects Tools using jsonresume:
https://github.com/rendercv has a website as well https://app.rendercv.com/
https://github.com/robhinds/robhinds.github.io
https://github.com/subidit/rover-resume
https://github.com/junian/markdown-resume → this one did very good at ATS check!
https://github.com/xitanggg/open-resume
https://ohmycv.app/
ATS Checkers
https://github.com/srbhr/Resume-Matcher
https://www.resume-now.com/resume/ats-resume-checker
https://www.resumego.net/resume-checker/
https://enhancv.com/resources/resume-checker/