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 >= 10.14

Analytics:

Installs (30 days)
hex-fiend 344
Installs (90 days)
hex-fiend 1,133
Installs (365 days)
hex-fiend 5,194