RSSOwl

RSSOwl is a news aggregator for RSS and Atom News feeds. It is written in Java, and is built on the Eclipse Rich Client Platform which uses SWT as a widget toolkit to allow it to fit in with the look and feel of different operating systems while remaining cross-platform. Released under the Eclipse Public License, RSSOwl is free software.
In addition to its full text searches, saved searches, notifications and filters, RSSOwl v2.1 synchronized with the now discontinued Google Reader.
History.
RSSOwl began as small project on SourceForge at the end of July 2003. The first public version was 0.3a.
Version 1.0.
RSSOwl 1.0 was released on December 19, 2001. It was released with support for RSS and Atom News feeds. The initial release also supported exporting feeds to PDF, RTF, and HTML. This release was available for Windows, Mac, Linux, and Solaris.
RSSOwl 1.1 added support for toolbars and quicksearch in news feeds. Version 1.2 improved toolbar customization and added support for Atom 1.0 News feeds. Versions 1.2.1 and 1.2.2 added universal binary support for mac as well as drag and drop for tabs and a built in feed validator. RSSOwl was the SourceForge Project of the Month for January 2005.
Version 2.0.
RSSOwl 2.0 was announced on March 7, 2007 at EclipseCon 2007. Version 2.0 was rebuilt on the Eclipse Rich Client Platform and used db4o for database storage and Lucene for text searching. Several milestone versions were released before the final 2.0 version that added labeling of news feeds, pop-up notification of new feeds and storage of news articles in news bins. The final 2.0 version was released as milestone 9 and added support for secure password and credential storage, news filters, support for embedding Firefox 3.0 XULRunner to render news feeds, and proxy support for windows.
Version 2.1.
RSSOwl 2.1 was released on July 15, 2011 with Google Reader synchronization support and new layouts.
Forks.
RSSOWL is no longer maintained by its original developer however a maintained fork of it is available known as RSSOwlnix
Internationalization.
RSSOwl is translated into many languages: Bengali, Bulgarian, Czech, Chinese (Simplified), Chinese (Traditional), Danish, Dutch, English, Finnish, French, Galician, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Serbian (Cyrillic), Serbian (Latin), Slovenian, Spanish, Swedish, Thai, Turkish and Ukrainian.