Test on Every Browser Online
Run your site on real Chrome, Firefox, Safari, and Edge across Windows, macOS, Android, and iOS, straight from your browser. No downloads, no virtual machines, no Mac required for Safari.
Trusted by 3M+ users globally at
"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"
"We figured out a more efficient way to monitor system health and resolve failures earlier in lower environments."
"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."
"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."
Everything You Need in an
Online Browser Emulator
Run live, automated, and responsive checks across Chrome, Firefox, Safari, and Edge on the browser emulator cloud.
3000+ desktop and mobile browser combinations
Choose a browser, OS, and version, and an interactive session opens in seconds, no download, no setup.
Start testing free
Switch browsers mid-session without restarting - Chrome, Firefox, Safari, Edge, and more
Nothing to install, it all runs in the browser, on any machine.
Test across network conditions and 170+ geolocations to see how your app behaves for users everywhere.
Debug your website right in the emulator
DevTools and the UI inspector are built in, so you catch layout and rendering issues as you test.
Start debugging freeInspect the DOM, debug JavaScript, and check network activity inside the emulator session.
Examine your app's interface element by element to track down layout and rendering bugs.
Give your whole team browser-based access to the same emulators, with no per-machine setup.
Automate tests across emulators in parallel
Run automated tests across multiple sessions at once, with no local infrastructure to manage.
Start testing freeAutomate with Appium, XCUITest, and Detox against iOS simulators.
Run suites simultaneously across multiple browsers to shorten feedback loops.
Plug simulator testing into your pipeline for continuous testing on every build.
Everything the Browser Emulator Does
60+ resolutions
See how your site renders across phones, tablets, and desktops from a single session.
Test across regions and networks
170+ geolocations to simulate different connection speeds to see how your site behaves worldwide.
Test local and staging sites
Test on localhost or a staging URL through an encrypted tunnel, nothing deployed publicly.
Test Safari without a Mac
Run hundreds of browser emulators side by side. Cut a 4-hour suite to under 12 minutes.
Capture and share
Record sessions, take screenshots, and hand bugs to your team with full context.
Inspect the live DOM
Examine the DOM, computed CSS, and element hierarchy inside any session to track down rendering issues fast.
Test Safari on Windows, No Mac Needed
Safari only runs on Apple hardware, which leaves most teams unable to test the browser a large share of their users are on. Open a real Safari session from any Windows or Linux machine and check exactly how your site renders and behaves, without buying or borrowing a Mac.
Test on Safari now
When You Need Real Hardware, Not an Emulator
Emulators are perfect for UI flows, layout checks, and fast functional testing. When a release depends on hardware behavior, the same tests run on real devices in TestMu AI’s Real Device Cloud.
Explore Real Device Cloud
Only on real devices
Automate Browser Flows from your
Terminal with Kane CLI
Some Love from our Customers
As Best Egg expanded its product offerings and entered new markets, we knew our old testing infrastructure couldn’t keep up.
With support from Tenny Agustin, our Engineering Operations Lead, we modernized our approach with
TestMu AI
Best Egg
best-egg
Excited to Share My Learning Journey with Kane AI & Lambda Tool!
I'm pleased to announce that I've recently gained hands-on experience exploring Kane AI through the Lambda Tool and it’s been a fantastic journey of upskilling!
KaneAI
Suryateja Goud
suryateja-goud
See how is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.
TestMu AI
Microsoft India
MicrosoftIndia
Frequently asked questions
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