After doing some fiddling with some Excel sheets, I saw that it worked out nicely for me to have a monthly or trimestrial todo list with checkboxes and a progress bar on top.
The general look and feel is described on To-do List with Priorities using Excel
Question: As I am not much of an Excel fan, are there any web apps that implements something very similar in look and feel?
If not, I might start developing a web based solution.

