itsycal

Install command: 
brew install --cask itsycal

Name: Itsycal

Menu bar calendar

https://www.mowglii.com/itsycal/

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

Cask code: itsycal.rb on GitHub

Current version: 0.15.6

Requirements: macOS >= 10.15

Versions:

Intel catalina 0.14.1

Analytics:

Installs (30 days)
itsycal 924
Installs (90 days)
itsycal 2,709
Installs (365 days)
itsycal 11,300