Agenda is a simple basic to do task manager application for Linux. It is written in Vala and released under GNU General Public License v3.0. This application is very simple in design write down your tasks and it saves the list automatically. You can complete the task by tick them off. It comes with auto completion for previously added tasks, Undo/Redo/Quit keyboard shortcuts with Ctrl-Z and Ctrl-Y and Esc key.