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.
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.
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.
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.
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.
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.
BrowserStack Live
A cloud service for testing websites by hand in real desktop and mobile browsers on real devices.
TestMu AI
A cloud testing platform, formerly LambdaTest, for cross-browser, automated and AI-assisted testing of web apps.
EXPERTE Bulk Mobile Friendly Test
A free online test that checks many pages of a website for mobile-friendliness at once.
Can I use
A searchable web tool with browser support tables for HTML, CSS, JavaScript and other front-end features.