Latest RSSOwl 2.0 Development Milestone, at time of writing the tenth, seems to be very fast at first sight. I also wrote a post dedicated to RSSOwl and others RSS readers on this blog, and i consider it the most complete RSS feed reader/manager around. I write again about RSSOwl because its feature doesn't end to surprise. The ability to collect categories of bookmarks, Bookmark Sets, is again a good point to don't underestimate.
Feeds are displayed by tabs with favicons and the headline navigation is able to perform a fine grained grouping (by author, feed, category, labels, etc.). This Milestone also come with a new reading pane for the post itself with new icons to perform common actions, like marking an headline as sticky or jumping to posts feed comments, customizable sharing functionality where you can choose between well known social networks and e-mailing, and a more intuitive preferences interface with new options. Definitely cute.