Update: Link to the Omea wiki page with more details.

My favourite RSS aggregator, newsgroup client and all-around cool application I always have in the background is JetBrains' Omea Pro. While I don't use those features, Omea also supports aggregating and searching Outlook mail, contacts and a host of other connectors. Now that it's open source there's even be room for improvement, so those of you who do not like online aggregators like Google Reader would do well to go to the Omea site and check it out!