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Responsive Design CheckerBrowserStack Live
Free

Free to use.

 Paid

Paid plans, with a free way to get started advertised on the site.

Web Web
  • Previews several screen sizes from one page
  • Nothing to install
  • More than 3,500 browser combinations on real devices
  • Older browser versions, including Internet Explorer, available for checks
  • Limited to five requests every five minutes
  • Simulated viewports, not real devices
  • Paid service for ongoing use
  • Requires an account and a steady internet connection
Web application Web application, Hosted service
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Needs internet

Checked September 23, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.