Vienna is a freeware and Open-Source RSS/Atom newsreader with article storage and management via a SQLite database, written in Objective-C and Cocoa, for the OS X operating system. It provides features comparable to commercial newsreaders, but both it and the source code are free and available for download.

Features

• Subscribe to Atom/RSS news feeds and podcasts
• Simple and intuitive user interface with customisable toolbar
• Built-in tabbed browser
• Global search of all retrieved articles
• Automatic detection of newsfeeds on Web pages
• Smart folders for organising related feed articles
• Custom article display styles
• Three separate reading layouts
• Blogging integration
• Support for downloading enclosures in articles
• Filter the displayed articles
• Manual reordering of the subscription list
• Full AppleScript support
• Localised into several languages