omnioutliner

Install command: 
brew install --cask omnioutliner

Name: OmniOutliner

Note taking application and information organiser

https://www.omnigroup.com/omnioutliner/

Cask JSON API: /api/cask/omnioutliner.json

Cask code: omnioutliner.rb on GitHub

Current version: 5.15

Requirements: macOS >= 10.11

Versions:

Apple Silicon big sur 5.12
Intel big sur 5.12
catalina 5.8.5
mojave 5.8.5
high sierra 5.4.2
sierra 5.3.4
el capitan 5.1.4

Analytics:

Installs (30 days)
omnioutliner 16
Installs (90 days)
omnioutliner 39
Installs (365 days)
omnioutliner 273