stats

Install command: 
brew install --cask stats

Name: Stats

System monitor for the menu bar

https://github.com/exelban/stats

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

Cask code: stats.rb on GitHub

Current version: 2.11.61

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
stats 9,002
Installs (90 days)
stats 26,779
Installs (365 days)
stats 106,163