If you got a hundred things to do, the habit of losing your Post-it or just prefer using a screen to manage stuff, this software may suit you!
With Winarkeo To-Do List you can easily create and edit To-Do Lists thanks to its .tdl file format. A Winarkeo To-Do List file is a bunch of lines with the following scheme:
0/1 (to do/done)=%task content%
Once installed, you have just to open an existing .tdl file or create one from the To-Do List software. Any edit you made is automatically saved.