protege

Install command: 
brew install --cask protege

Name: Protégé

Ontology editor

https://protege.stanford.edu/

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

Cask code: protege.rb on GitHub

Current version: 5.6.5

Current version requires: macOS >= 10.11

Analytics:

Installs (30 days)
protege 38
Installs (90 days)
protege 121
Installs (365 days)
protege 495
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