Inoreader is one of the most feature-packed free RSS readers available. Without paying a cent, you can follow an unlimited number of feeds, and you can even search within your subscriptions without paying for a premium plan (although they offer these too.) While most RSS apps only cache content for the short-term, Inoreader doesn't have limited time archives. Your content—even the stuff you've already read—is stored permanently. To stay organized, you can group your feeds in folders and use tags to separate out individual articles as you read them. This makes Inoreader a great tool for power users, but it's very accessible for beginners as well. After signing up, you're guided through a tutorial that shows you how to use the app's major features, making it easy to get up and running even if you have no previous RSS experience.
If you upgrade to one of Inoreader’s premium plans, you get even more features. Add feeds for Twitter and Google+ profiles just by typing in the username of the person you want to follow, write advanced rules for sorting your content into folders and tags, and customize your dashboard to see exactly what interests you the most when you log in.
$19.99 & $49.99 per year for the Supporter & Pro Editions