krita

Install command: 
brew install --cask krita

Name: Krita

Free and open-source painting and sketching program

https://krita.org/

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

Cask code: krita.rb on GitHub

Current version: 5.2.11

Current version requires: macOS >= 10.13

Analytics:

Installs (30 days)
krita 575
Installs (90 days)
krita 1,574
Installs (365 days)
krita 6,500