Mac: Previously-mentioned ReadKit has always been a great way to catch up on your Instapaper, Pocket or Readability queues. The app recently expanded its scope to include support for several RSS syncing solutions to help ease the transition from Google Reader.
First, the bad news: Feedly isn't currently among the supported services. But if you're using NewsBlur, Feedbin, Fever or Feed Wrangler, this is a fantastic client for Mac users. You can also enter RSS feeds manually, if you aren't concerned about syncing. Your folders appear in the sidebar alongside your read it later queue, and for me it makes a lot of sense to merge the two concepts into a single app. Once you run out of new articles, the older stuff you want to catch up on is just a click away.
The reading experience is top notch, especially the single-column focus mode to help you concentrate on the article in front of you. You can also select any typeface on your system as your preferred reading font. If you're a news hound and own a Mac, ReadKit is absolutely worth adding to your dock.
ReadKit ($5.49) [Mac App Store]