Tiny Tiny RSS is a web-based news feed (RSS/Atom) aggregator, designed to allow you to read news from any location, while feeling as close to a real desktop application as possible.
A reBlog facilitates the process of filtering and republishing relevant content from many RSS feeds. reBloggers subscribe to their favorite feeds, preview the content, and select their favorite posts. These posts are automatically published through their
BottomFeeder is a news aggregator client (RSS and Atom) written in VisualWorks Smalltalk. BottomFeeder runs on Linux x86, (also FreeBSD), PowerPC Linux, Sparc Linux, Windows (98/ME/NT/2000/XP/CE 4), Mac OS8/9, Mac OS X (PPC, intel), AIX, SGI Irix, HP-UX,
Pears is a three-pane newsfeed (RSS/RDF and Atom) aggregator which caches downloaded feeds for offline use. It has a clean, uncluttered interface, it's easy to use and works on Windows, Linux and MacOSX.
AmphetaDesk is a free, cross platform, open-sourced, syndicated news aggregator - it obediently sits on your desktop, downloads the latest news that interests you, and displays them in a quick and easy to use (and customizable!) webpage.