Going a bit meta here: Is there a standard library to use for monitoring 3rd-party interactions users bring to a website? Typically this would mean browser add

Going a bit meta here: Is there a standard library to use for monitoring 3rd-party interactions users bring to a website? Typically this would mean browser add-ons and extensions, but I wouldn't be surprised to discover other things (like headers injected by cellular companies, or who knows what from malware infections). Such a tool would be useful when troubleshooting various 'works on my machine' scenarios.