The only rss feed reader I have used that hasn’t gone away or become sketchy is thunderbird, and it’s not a great ux (I haven’t used it in a while, maybe I’m wrong)
RSS seems like great tech but it doesn’t have great user facing apps (that is easy to find at least) to support it
At the risk of sounding like a shill, have you tried Feedly? (feedly.com)
I switched over to it ages ago after the death of google reader, and it's held up remarkably well for me, and now also includes welcome features for, e.g., intaking email newsletters, conducting automatic content-specific web searches, etc into the same RSS-reader UI.
I'm gonna have to give this a thumbs up for use too. I'm not a fan of it being propritary, or tied to a web service, but it works amazingly well for what it is.
I'm still hunting for a good self-hosted or offline alternative, but till then, Feedly really does cover that gap.
Feedbro is also a very good choice for reading RSS feeds. Best of all, you could configure it to get the full article from the web site itself and show it in the preview pane.
RSS seems like great tech but it doesn’t have great user facing apps (that is easy to find at least) to support it