sparkle

Install command: 
brew install --cask sparkle

Name: Sparkle

Software update framework for Cocoa developers

https://sparkle-project.org/

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

Cask code: sparkle.rb on GitHub

Current version: 2.7.3

Requirements: macOS >= 10.13

Analytics:

Installs (30 days)
sparkle 108
Installs (90 days)
sparkle 283
Installs (365 days)
sparkle 788