responsively

Install command: 
brew install --cask responsively

Name: Responsively

Modified browser that helps in responsive web development

https://responsively.app/

/api/cask/responsively.json (JSON API)

Cask code on GitHub

Current version: 0.19.1

Analytics:

Installs (30 days)
responsively 386
Installs (90 days)
responsively 835
Installs (365 days)
responsively 3,208
Fork me on GitHub