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: 1.16.0

Requires: macOS >= 10.15

Variations:

Intel sequoia 1.16.0
sonoma 1.16.0
ventura 1.16.0
monterey 1.16.0
big sur 1.16.0
catalina 1.16.0

Analytics:

Installs (30 days)
responsively 79
Installs (90 days)
responsively 274
Installs (365 days)
responsively 1,209
Fork me on GitHub