I found very nice article about online RSS readers available and their performance comparison reviews. i personally use jet brains omea reader. There is also another called FreeReader. but omea is fast, it aggregates, and it keeps you organized.
Omea Reader 2.2
All-in-one feed reader: Read RSS feeds, Atom feeds. Also read newsgroups and bookmarked web pages, all in one easy to use information environment.
- FireFox 2.0 support
- Mixed feeds problem is solved
- Feeds tree filtering
- Export of resources' list
- Automatic database backup
- Text indexing in idle mode
here are some Web-based Feed Readers
- Attensa Online
- Bloglines
- FeedLounge
- Google Reader
- Gritwire
- News Alloy
- NewsGator Online
- Pluck Web Edition
- Rojo
