Synder is an Atom/RSS/SearchSuggestion/OPML processing framework
It is Optimized For Android, but works with Java SE/EE.
Synder has a small-footprint, low memory consumption.
The only dependency for parsing is a SAX2 implementation.
"dBird Notifier" (with interactive pop-up tray icon) shows incoming messages of the following types: email (thunderbird), twitter and icq (pidgin) - both visually with system message and RGB-LED attached to serial/usb port (hardware details included)