TinaHolmboe, I just stumbled upon this thread after making another fruitless tour today of the to do apps available for the N900. I'm still using Bonsai running on Garnet, but I would give up a lot of features to be able to use something natively.

My requirements are similar to yours, except that I'm not quite certain what you mean by "functional widget."

I would need the ability either to drag and drop items in order to reorder and indent -or- simple buttons to accomplish the same task. That is to say, I don't want to open a task in order to indent/outdent the task, etc.

Sadly, there are a bunch of task list app.'s out there; however, they all have relatively the same features, and none that I have used rise to the level of task manager. I'll take a look and see if there's anything close in open source for the desktop.