A wonderful Mac app known as Coppice, originally developed by Martin Pilkington who then, alas, died, has been updated and brought back to the Mac App Store by a friend of his, Stephen Troughton-Smith (M Cubed Software).

It's an unusual combination of writing / note-taking tool with mindmap – very flexible, very enjoyable to use. For more details see https://coppiceapp.com

I mourned its disappearance, and I'm delighted it's back!