Workflowy is great. It’s very simple! It’s so simple… that I was kind of curious why there wasn’t an open source version.
Well there is! It’s called BulletNotes.
There have been some discussion with the dev to have it save it’s backup files to NC instead of Dropbox but it seems like that feature development has been stalled.
I just wanted to drop a note in the forum in case people would find the service useful themselves and/or if anyone wanted to take a crack at it: https://gitlab.com/NickBusey/BulletNotes/issues/7