A few versions ago, a certain panel widget was bundled with Kubuntu. It was a sort of a lightweight folder viewer - when clicked, a list of all files and folders in the user's home directory would pop up from the panel, and would allow simple navigation through the directory structure until a file is selected. It was very convenient to have, saving quite a few clicks compared to launching Dolphin.

But it's not bundled any more, and I don't know what it's called.

A picture of what (I think, at least) is the widget in question is here, wedged between the K menu and Show Desktop widgets. Sadly, the widget is not open, so it doesn't show what it looked like in action.

Anyone know what this is/was called, and how I can get it back?