I’ve been using NetNewsWire before I moved to Windows. It’s perfect as long as you’re in the Apple ecosystem.
Now that I moved to Windows (I was forced to), I can’t use iCloud to sync rss feeds and favorite articles. I’ve tried feedly but it sucks. I ended up using Outlook, but it doesn’t sync with its iPhone app. Is there any free way to do this, hopefully using opensource software? Syncthing doesn’t work on iOS, by the way.
P.S. I’m now trying out inoreader, which is proprietary and still requires payment for more convenience, and so far it’s OK. Not as good as NetNewsWire though, it just works. It doesn’t limit the amount of news I can read per day like Feedly or hosted NewsBlur.