funter

Install command: 
brew install --cask funter

Name: Funter

Shows hidden files and folders and switches their visibility in Finder

https://nektony.com/products/funter

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

Cask code: funter.rb on GitHub

Current version: 7.0.2,365

Requirements: macOS >= 10.13

Analytics:

Installs (30 days)
funter 8
Installs (90 days)
funter 26
Installs (365 days)
funter 131