Linux RSS Feed Readers / Aggregators
AmphetaDesk is a solid aggregator of RSS feeds and displays them in a highly customizable web page.
BlogBridge makes it easy to discover, organize and read RSS feeds that interest you with preselected guides and suggestions based on what you like.
Google Reader is a decidedly simple yet very usable and, thanks to a flexible labeling system, quite comprehensive web-based RSS feed reader.
Lektora is a stylish and friendly way to read RSS feeds like a newspaper in Internet Explorer or Firefox.
Liferea is simple and lacks more advanced features, but it offers a very clean, fast and useful approach to reading RSS feeds.
Mozilla Thunderbird is a fully featured, secure and very functional email and chat client plus RSS feed reader. It lets you handle mail efficiently and with style, and Mozilla Thunderbird filters away junk mail too.
NewsIsFree is a comprehensive web-based RSS feed aggregator with a newspaper-like layout and a popularity filter to show you only mass-moving items.
Pears is a simple, but functional RSS feed reader that gets you through the news in no time.
Rocketinfo RSS Reader
Rocketinfo RSS Reader is a really easy to use yet flexible and universally accessible interface to all your favorite news and content sources.
Sage - Mozilla Firefox RSS Feed Reader Extension
Sage improves on Mozilla Firefox's live bookmarks with an RSS feed reader extension that adds better organization and much prettier display.
Sage User Reviews - Mozilla Firefox RSS Feed Reader Extension
Find users' reviews of the Sage Mozilla Firefox RSS feed reader extension here and share your experience, too.
Squeet delivers news items from RSS and Atom feeds to your email Inbox, integrating them nicely with other incoming "stuff" and exposing them to all the power of your email program while providing convenient subscription management itself.
Bloglines is a great, web-based way to read RSS feeds. There's no software to wrestle with, and using Bloglines is smooth and easy.