FeedDemon

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. * Reads …

Sputnik is a simple and practical rss reader for Windows and Mac OS X. Pros: 1. Fun to use: Keyboard (and mouse) shortcuts allows for convenient and fast browsing through …

Phppaper is an easy to use and open source rss reader, created as an alternative for http://suse.me/apps/google-reader/ . It has adopted features such as opml import, marking as read when …

cloneReader is a clone of http://suse.me/apps/google-reader/ , actually in beta. Import subscriptions.xml and starred.json from google reader. Remote login. Responsive. Remote Storage. Share entries in social networks. Source: https://github.com/jcarle/clo...

Just a website where bookmark interesting links and read your RSS feeds.

R3R is a reader for RSS, ESF and Atom feeds. It has a simple GUI that gathers your subscribed feeds on startup and displays them into a single list.

[The site rssminer.net is no longer available, but the source code is available at Github.] Rssminer is "yet another free RSS reader".

Feed On Feeds is a server-based RSS aggregator written in PHP. It provides a simple firehose-style interface with the capability of filtering on tags and individual sites.