Vienna 2.3.0 Beta for Mac OS X
Vienna is a freeware, open source RSS/Atom newsreader for the Mac OS X operating system. It provides features comparable to commercial newsreaders, but both it and the source code are freely available for download.
A summary of some of its features:
:: Subscribe to Atom/RSS news feeds and podcasts.
:: Simple and intuitive user interface.
:: Built-in tabbed browser.
:: Smart folders for organising related feed articles.
:: Custom article display styles.
:: Full AppleScript support.
Download: Vienna 2.3.0 Beta for Mac OS X Mac OSX 10.3.9 or later