From Lior Banai:
RSS Desktop Aggregator is a productivity and time saver app that sit on the desktop and read RSS feeds and Outlook Items. Paste the RSS links in the RSS settings screen and you will never need to manually check for updates. It features timeline and history for each post, feed categories to group feed in user defined categories and do a bulk refresh of feeds in category, and export the entire feed posts to external file. It has support for Gmail Account for displaying unread emails.