Is there a way to see what cookies are active on any website at any time?
If you are using the google chrome, there is a good chrome extension to see which cookies are used on each website you visit.
Its name is "EditThisCookie" and is a cookie manager. You can install it on your chrome browser by clicking on the below URL.
https://chrome.google.com/webstore/detail/editthiscookie/fngmhnnpilhplaeedifhccceomclgfbg