Vienna

Open source; $0

Current Version: 2.3.1.2302 (November 18, 2008)

Vienna is a freeware, open source RSS/Atom reader for the Mac OS X operating system. It provides features comparable to commercial newsreaders but it is both it and the source code are freely available for download. As of the time of writing, Vienna is a beta release with the final version scheduled before the end of the year. The first beta is fully functional and stable, and is ready for download now. Features include:

• Simple, uncluttered UI - Vienna's user interface is intentionally kept sparse as so to only present you with the controls you absolutely need. All other functionality is moved to the menus.
• Support for RSS and Atom feeds - Vienna supports both RSS 2.0 and Atom feeds. It automatically takes care of deciphering and presenting the articles in a consistent format regardless of the original feed format.
• Smart Folders - Create folders whose contents are dynamically determined by criteria that you specify. When you view the folder, Vienna automatically displays all articles meeting that criteria.
• Folder groups - Organize your subscriptions into groups and you can even create groups within groups.
• Import and Export - Import your subscriptions from Bloglines or any other RSS reader that exports in OPML format. Similarly export your subscriptions to an OPML format file for importing elsewhere.
• Scheduled Refresh - Refresh your subscriptions automatically every 30 minutes or every 1, 2 or 6 hours.
• Flagged Articles - Flag articles of interest and view them together via the Marked Articles smart folder.
• Reading Panes - Choose your reading pane layout. Put it below the articles or to the right, whichever orientation works best for you.
• Styles - Change your style in which articles are presented from any of the built-in custom styles. Or create your own styles with a bit of knowledge of HTML and CSS.

Version 2.3.1.2302 adds/changes the following:

• There is only one change in Vienna 2.3.1. It fixes a crash on Mac OS X 10.4 Tiger when you attempt to customize the toolbar.

See the blog for the detailed history of changes.