Hildon Event Feed is an event feed application and widget for Maemo5, with the purpose of displaying events posted from third-party applications and scripts. Features:

• Display events in the UI application and homescreen widget.
• Remove an event, or events from a particular source, from within the UI
• Refresh events from within the UI.
• Launch the action defined in the event when activated in the UI or homescreen widget.

From the application developer/script writer side, all interaction with the application is done via DBus. A number of methods are provided to enable developers to:

• Add/remove an event.
• Remove all events from the specified source.
• Add/remove/retrieve a refresh action, which is called when the user presses the 'Refresh' button in the UI or homescreen widget.

Details of the methods, along with some examples, are provided on the (badly formatted) wiki page

The package name is hildonevents.

Some screenshots: