What are some alternatives?
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Standard Notes - A safe place for your notes, thoughts, and life's work
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
CherryTree - cherrytree – giuspen
Things - Things is an easy to use task manager.