Thanks to a fancy plugin i spied over on the discourse meta forum, it’s time for the return of a long-missed feature: the “who’s online right now” status bar!
It’s in the upper left corner, below the category breadcrumbs. The docs say that the plugin polls the site messagebus about once per minute for updates, so updates should be live and reasonably accurate.
Whew. I can finally check that off of my “things to implement on the forums” list!