fontgoggles

Install command: 
brew install --cask fontgoggles

Name: FontGoggles

Font viewer for various font formats

https://fontgoggles.org/

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

Cask code: fontgoggles.rb on GitHub

Current version: 1.8.7

Requirements: macOS >= 10.11

Analytics:

Installs (30 days)
fontgoggles 23
Installs (90 days)
fontgoggles 60
Installs (365 days)
fontgoggles 228