aria2d

Install command: 
brew install --cask aria2d

Name: Aria2D

Aria2 GUI

https://github.com/xjbeta/Aria2D

Cask JSON API: /api/cask/aria2d.json

Cask code: aria2d.rb on GitHub

Current version: 1.3.9,433

Requirements: macOS >= 10.13

Analytics:

Installs (30 days)
aria2d 92
Installs (90 days)
aria2d 325
Installs (365 days)
aria2d 1,568