I used to have a zillion todo txt files in the early 2000's, migrated to OneNote around 2005 and have been using the same OneNote notebook for 20 years now. My life is in there - 20 years worth of todos, lists, thoughts, ideas, etc.. always evolving, perfectly synchronized across computers and mobile. I'm referencing and updating my OneNote all day as I get things done, have ideas, and think of new things to do, or things to remembers. It's an extension of my brain at this point.
I've tried alternatives, but OneNote has been simple and reliable, it just works everywhere. Probably one of the most important apps in my life.
replies(2):