Alternatives to Am I Responsive

A web tool that shows a site on desktop, laptop, tablet and phone mockups at once. The listings below can replace it for an important use case. Each note says what changes if you switch.

The original

  • Am I Responsive

    A web tool that shows a site on desktop, laptop, tablet and phone mockups at once.

    FreeProprietaryWeb

Replacements

Listings that take over the same core job as Am I Responsive.

  • Responsive Design Checker

    A free browser tool that previews a website at mobile, tablet and desktop screen sizes.

    FreeProprietaryWeb

    Responsive Design Checker previews several screen sizes free in the browser, but limits use to five requests every five minutes.

  • Screenfly

    A free online tool that shows a website at the screen sizes of phones, tablets, desktops and TVs.

    FreeProprietaryWeb

    Screenfly shows phone, tablet, desktop and TV screen sizes rather than Apple-only mockups, and only works for publicly reachable pages.

  • MobileTest.me

    A web tool that previews a website inside smartphone and tablet emulator frames.

    FreeProprietaryWeb

    MobileTest.me previews a site inside phone and tablet emulator frames, though its device list is old and omits current phones.

  • BrowserStack Responsive

    A free web tool that previews how a website looks across real device screen sizes.

    FreemiumProprietaryWeb

    BrowserStack Responsive renders pages on real devices rather than mockups, but only tests public pages and deeper features sit behind paid plans.

  • LT Browser

    A desktop browser for building, testing and debugging responsive websites across many device viewports side by side.

    LT Browser is a freemium desktop app for Windows, macOS and Linux showing over 50 device viewports side by side for debugging layouts.

Similar software

Related functionality, not a direct replacement.