
Kubuntu ships with the Microblogging Plasma Widget which supports both Twitter and Identi.ca. To add the desktop widget, simply click on the desktop, and select . Simply click and drag the widget to the desktop and configure it for either Twitter or Identi.ca.
Another application that is available in the repositories is Choqok. Choqok supports both Twitter and Identi.ca as well, and sits in the system tray.