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Test On Browser Emulator Online
Perform cross browser testing with desktop, mobile & tablet browser emulators. Upgrade testing with 3000+ real-time browsers on the cloud.
LambdaTest is now
TestMu AI
Trusted by 2M+ 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."
100% Accuracy is Essential - Switch to Real Device
Mobile emulators and simulators offer a glimpse, but they fall short in mimicking real-world scenarios. With TestMu AI's Real Device, you can test on actual devices to ensure your app excels in every real-world scenario. Don't settle for emulations/simulations; choose real device.
Dedicated real devices cloud for enterprises.- Network throttling for 2G, 3G, 4G, and 5G.
- Manual and automated app testing to debug real world scenarios
- Improve device coverage and maximize ROI
Reliable Cross Browser Testing With Real Time Browser
Accelerate your cross-browser testing! Experience seamless testing from anywhere with our cloud-based environment. Instantly fire up browser without any installations. Test effortlessly, anytime, anywhere!
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Packed with Next-Gen AI Features!
24/7 Support
Get access to industry leading 24/7 dedicated support
Local Host
Perform faster local testing with UnderPass app, built for secure tunnels
120+ Integrations
Fits seamlessly into your testing stack with out-of-the box integrations
Native DevTools
Use native DevTools to debug and optimize your apps effortlessly
Selenium Automated Testing On Browser Emulators
Automate your web testing with cloud Selenium Grid & run automation scripts across a variety of desktop and mobile browser emulators online. Leverage parallel testing to reduce test cycles significantly.
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Integrated Native Developer Tools For Debugging
Be it Chrome, Safari, Microsoft Edge, Yandex or even mobile browsers, every browser on TestMu AI cloud comes with a pre-installed native developer tools to help you debug.
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AI-Agentic Quality Engineering
Test AI agents such as chatbots and voice assistants to ensure efficiency, relevancy, and performance.More about AI AgentTesting
Test Local Pages On Browser Emulator Online
Experience seamless cross-browser testing with TestMu AI Tunnel feature! Test your locally or privately hosted website on 3000+ browsers across Windows, Mac, iOS, and Android effortlessly.
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Perform Responsive Testing On Browser Emulator Online
Instantly test responsiveness of your website across various resolutions through browser emulators. Test on browser emulators to ensure a seamless responsive web design on Chrome, Safari, Firefox & many more browsers.
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Trusted by Top Support Teams Worldwide
50%
reduction in test execution time
“HyperExecute is a highly reliable test execution platform and has excellent customer support.”
Sagar Uday Kumar
Sr. Engineering Manager
More Reasons to Love TestMu AI
Users
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Enterprises
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Countries
132
Recognized in Gartner's Magic Quadrant 2025 as a Challenger for strong customer experience.
Featured in Forrester's Autonomous Testing Platforms Landscape, Q3 2025 for innovation in AI-driven testing.
Enterprise-Grade Security, Privacy, AI Governance & ESG
We protect your data and AI systems with global security, privacy, responsible AI, and ESG standards, backed by certifications.
Wall of Fame
TestMu AI is #1 choice for SMBs and Enterprises across the globe.
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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
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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
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See how is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.
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Microsoft India
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