What's a good site for RSS XML files?

Try ours here: https://murmel.social/feeds/top.rss

It will be a good oppportunity to see how your reader renders tweets (we make a great use fo them inside the content).

https://lwn.net/headlines/rss https://www.theregister.com/offbeat/bofh/headlines.atom https://xkcd.com/atom.xml