Displays active trackers, tagging containers, and network activity present on the page.
MightyHive has built a powerful but easy to use extension. The site tool extension presents the information that I need to know in an easy to read format.
https://www.simoahava.com/
digodat-extensions-admin
Adswerve
http://webanalyticssolutionprofiler.com/
http://prebid.org/
Further Worldwide
https://tempo.io/
OpenX Labs
https://www.observepoint.com/tag-debugger/
https://taginspector.com
https://omnibug.io/
https://tealium.com