Pretty simple new Mac text outliner from a longtime Mac dev (DockView, MultiDock, Command-Tab Plus).

Tree lets you switch between regular vertical lists and tree-like horizontal outlines, and you can try it out live right on the webpage too.

https://noteifyapp.com/tree-outliner/

No idea on price, as the webpage only says, 'Free for 14 days · one-time purchase'.

From the "MacPlus Software Store" page:



Tree Outliner Standard 13,85 €

A tree outliner for Mac: horizontal and vertical outlining in one workspace.
Standard license for 1 Mac.
Requires macOS 14.0 or later.
One-time fee, not a subscription. Prices exclude VAT/sales tax.

Tree Outliner Lifetime 27,75 €

A tree outliner for Mac: horizontal and vertical outlining in one workspace.
Lifetime license for 3 Macs.
Requires macOS 14.0 or later.
One-time fee, not a subscription. Prices exclude VAT/sales tax.

Nice. Simple, elegant. His NoteTree app follows a similar philosophy.