Source code & binary
taskall plugin: A plugin that shows all windows(tasks) on a menu. You click the menu item to switch to a window. XFCE & Gnome 2.x also has this kind of plugin.
When lxpanel taskbar display the title bar of terminal(xterm, rxvt, gnome-terminal) like user@hostname:~/aaa/bbb/ccc. When the title has to be truncated, it will be displayed as ...name:~/aaa/bbb/ccc. It is very useful to help selecting the right terminal.