Most nodes support an xml view with the essential information condensed. (Alas Nodelets don't.)

E.g. try https://perlmonks.org/?node_id=11163497;displaytype=xml for this post.

This means importing the data from most nodes and displaying them externally is possible. Even with an XHR aka JSON request with a JS library.

Tho without caching this might generate too much traffic.