RSS Guard is simple, light and easy-to-use RSS/ATOM feed aggregator developed using Qt framework which supports online feed synchronization.


NetNewsWire is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best open source Windows alternative is RSS Guard. If that doesn't suit you, our users have ranked more than 100 alternatives to NetNewsWire and 19 are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to NetNewsWire are Fluent Reader, QuiteRSS, FeedFlow and Folo.
RSS Guard is simple, light and easy-to-use RSS/ATOM feed aggregator developed using Qt framework which supports online feed synchronization.


It is free for Mac, Windows and Linux if you download it from GitHub, and it's paid ($2) for Android and iOS.


QuiteRSS is a open-source cross-platform RSS/Atom news feeds reader written on Qt/C++



Follow your favorite RSS feeds with FeedFlow, a minimalistic RSS Reader. Enjoy a clutter-free reading experience, as FeedFlow offers a minimalistic list and opens the articles on their respective websites or in reader mode.




As they say, your thoughts are what you read—and we’ve been consuming noisy feeds for too long! Follow organizes content into one timeline, keeping you updated on what matters, noise-free. Share lists, explore collections, and enjoy distraction-free browsing.




FeedDeck is an open source RSS and social media feed reader, inspired by TweetDeck. FeedDeck allows you to follow your favorite feeds in one place on all platforms.






BlogBridge is an open source Java-based feed aggregator.
BlogBridge is aimed for those people who are subscribed to many feeds, including journalists, PR professionals and OPML enthusiasts.
BlogBridge also gives users the option to create an account with the free "BlogBr.

Looking for a simple and open feed reader?
Free, open source, easy to use, Sismics Reader is what you need to keep your feeds under control.
Central
Access all your RSS and Atom feeds in one central easy readable place.
Easy
Sismics Reader can be installed in few steps on al.




RSS Bandit is a standalone reader that has many attractive features, allowing a user to merge news headlines from multiple sources onto a single page, and organize articles based on keyword, read/unread status, and date.



Sage is a lightweight RSS and Atom feed aggregator extension for Mozilla Firefox. It's got a lot of what you need and not much of what you don't.
