hex-fiend

Install command: 
brew install --cask hex-fiend

Name: Hex Fiend

Hex editor focussing on speed

https://ridiculousfish.com/hexfiend/

Cask JSON API: /api/cask/hex-fiend.json

Cask code: hex-fiend.rb on GitHub

Current version: 2.18.1

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
hex-fiend 415
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hex-fiend 1,163
Installs (365 days)
hex-fiend 5,212