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.

A summary of some of its 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.

• Add option to enable/disable Webkit plugins (including Flash)
• Code reorganization : use of Cocoapod for dependancies