RSS Readers
These apps allow you to read Resource Description Framework Site Summary (RSS) feeds in a native and comfortable way. Apps such as Feedly allow you to organize the feeds you’ve saved in multiple categories and across multiple mediums (such as news articles, blog posts, and YouTube videos).
Google Reader
Discontinued
Google Reader was discontinued on July 1, 2013.
Google Reader was a Web-based aggregator, capable of reading Atom and RSS feeds online or offline.
The Old Reader
The Old Reader is a web based RSS reader, something like 
Google Reader . Import existing subscriptions, find Facebook friends and more.
Papaly
Discontinued
The official website is down since October 2018, the iOS app is no longer on the Appstore, the Chrome extension is not updated since July 2017 and the Firefox one since September 2016.
Papaly is a simple social bookmarking tool to manage all your links. Create custom boards and categories. Share and follow topics of interest to discover new content.
Tiny Tiny RSS
Web-based news feed aggregator, designed to allow you to read news from any location, while feeling as close to a real desktop application as possible.
Reeder
A news reader for the Mac with support for various sync services.Reeder 4 adds new features like…- The new Bionic Reading mode
RSSOwl
Discontinued
RSSOwl is unmaintained and has several known vulnerabilities. The project is no longer recommended.
RSSOwl collects data from RSS-compliant sites are called RSS readers or "aggregators.
Digg Reader
Discontinued
The service shutdown on March 26, 2018
An alternative to the popular Google Reader by 
Digg .Subscribe to your favorite blogs and publishers
Feedbin
Feedbin is an RSS reader with a beautiful reading experience. Follow your favorite websites, and keep everything in sync with your favorite iOS, Mac & Android apps.
Feedspot
A great alternative to Google Reader. Offers awesome productivity features like Search, RSS feeds for your starred items, tags & folder.
QuiteRSS
Features: Feed and news filters: new, unread, starred, deleted (for news until restart application) User filters Proxy configuration: automatic or manual
LinkedIn Pulse
Discontinued
The Pulse had been incorporated as a feature into the LinkedIn feed and is no longer offered as a separate app. In addition, it is listed as an alternative to many RSS feed readers, but does not offer RSS related functionality.
LinkedIn Pulse is the news app tailored to you.What’s New:
FreshRSS
FreshRSS is a free, self-hosted RSS aggregator. It is quite lightweight, fast (it can manage +100k articles without complaining) and powerful (e.g.
FeedReader
FeedReader Online is a FREE RSS news aggregation solution that provides robust, state-of-the-art features in an intuitive, user-friendly environment.
Yandex.Subscriptions
Discontinued
The service has been discontinued.
Yandex.Subscriptions allows you to receive updates from your favorite news and blog sites directly in...
RockMelt
Discontinued
RockMelt was acquired by Yahoo! The Rockmelt apps and web product will be shutdown on August 31, 2013.
Rockmelt is fast and fun way to discover and share the best of the web.
AntennaPod
A free and open source podcastmanager for Android, allowing you to subscribe to podcasts (via iTunes database & OPML), automatically download episodes using powerful mechanisms and listen to them the way you like (speed, balance adjustments, etc).
Miniflux
Miniflux is a minimalist and opinionated feed reader.Reader Feed formats supported: Atom, RSS 1.0/2.0, RDF, and JSON OPML import/export
selfoss
selfoss the web based open source rss reader and multi source mashup aggregator. Features* web based rss reader* universal aggregator* open source and free