QuiteRSS is a open-source cross-platform RSS/Atom news feeds reader

Idea
Quite fast and comfortable to user

Features
Embedded browser (Webkit core)
Feed and news filters: new, unread, starred, deleted (for news until restart application)
User filters
Proxy configuration: automatic or manual
Feed import wizard: Search feed URL if site URL was entered
Adblock
Click to Flash
Mark news starred
Automatic update feeds: on startup, by timer
Automatic cleanup on close using criterias
Enable/Disable images in news preview
Ability to quickly hide feed tree (for comfortable viewing)
Open feed or news in own tab
Quick news filter and quick search in browser
Sound notification on new news
Popup notification on new news
Show new or unread news counter on tray icon
Minimize on system tray: on start, on close, on minimize
Import/Export feeds (OPML-files)
Portable (Windows)
Free working set (Windows)
Shortcuts
Check for updates
Cross-platform
Multilingual
Open-source