pdfpen (deprecated)

Install command: 
brew install --cask pdfpen

Name: PDFpen

PDF editing software

https://smilesoftware.com/PDFpen

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

Cask code: pdfpen.rb on GitHub

Current version: 13.1

Requirements: macOS >= 10.12

Analytics:

Installs (30 days)
pdfpen 30
Installs (90 days)
pdfpen 84
Installs (365 days)
pdfpen 343