Moon Ticker puts the board in your toolbar: click the icon and the popup shows the current top 10 — rank, stake, clicks published per card — plus up to five tokens you star to watch. The badge on the icon is the rank of your top watched token, refreshed every ten minutes. Nothing else.
No wallet, no keys, no account, no tracking, no analytics, no permissions beyond reading the site's public feed. It keeps a ten-minute response cache in your browser so a burst of clicks costs one request; the cache and your watchlist are the only things it stores.
The Chrome Web Store listing is in review. Until it lands you can load it unpacked: the source is in the site's repository under extensions/moon-ticker — open chrome://extensions, enable developer mode, and point "Load unpacked" at that folder.
Want your token on the board it watches? Listing is free.