https://dashboard.literatecomputing.com/ looks like a dashboard that lets you install and manage (add/remove plugins, for instance) Discourse instances and also has (pretty much normal) access to categories, topics, and posts.
It also has features like in the user card and profile an admin can see what their discourse instances are and click to get to them to manage them, see whether their subscription is up to date, and so on. (But you can’t see that since you’re not an admin)