Reeder was one of the go to apps for RSS feeds in the early years of the iPad. It's still a very popular app for RSS feeds, even though people are moving away from RSS and onto social media.
But there are still many out there who uss RSS feeds to keep up with their favourite sites. It's a great way to see the latest posts from many different sites at once.
Reeder now is coming over to the Mac and public BETA has just been released for folks to try. Upon downloading and installing you can load up accounts from Feedbin, Feedly, Feed Wrangler and Fever. You can add multiple accounts too and switch between them very easily and quickly. You can add feeds manually too by entering the feed link or just the domain itself.
As expected from using the iPad app, the Mac version is very clean and simple. It has a very nice minimalistic look and puts content at the forefront.
Of course as with anything that's in BETA, there will be bugs and problems.