Solution Watch put together a great comprehensive list of 'to-do' lists. I personally just use the Greasemonkey script for Google Calendar but if you are a heavy note-taker or want something more robust. Solution Watch has the list to review.
There are a few things I look for when working with an online to do list. I like the service to be clean and organized displaying uncompleted/completed tasks. It also must allow for simple adding and editing of tasks. And lastly, donÂ’t hate me for this, but if I am going to be using this to do list every day for who knows how long, it must be attractive. The way it appears may not matter much to some of you, but it does for me because if I want to get in to the habit of using it, I have to be comfortable when using it. Other then that, any extras are welcome as long as they donÂ’t cause a loss of focus on the to do list itself.
