Reeder 3 is a news reader with support for multiple services such as:
- Feedbin
- Feedly
- Feed Wrangler
- Fever
- FeedHQ
- Inoreader
- NewsBlur
- Minimal Reader
- The Old Reader
- BazQux Reader
- Instapaper.
Don't want to use a third-party service? Reeder also supports local/standalone RSS (no sync).
Sharing Services
- Safari Reading List
- QUOTE.fm Read
- Buffer
- Readability
- Instapaper
- Evernote
- MarsEdit
- Pinboard
- Delicious
- App.net
- Messages
- ...and more via sharing extensions.