Live Testing for Cross Browser & App Testing
Test your website across 3000+ live OS and browser combinations, or run native Android and iOS app tests from anywhere in the world.
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."
Test on Latest Samsung Galaxy S26 and Android 17
Start Free Testing
Key Features to Test Websites and Apps with LambdaTest
Real Device Cloud
Test websites and apps on diverse real mobile devices; ensure responsiveness, reliability, compatibility.
3000+ Browser Environments
Test your site on LambdaTest with 3,000+ browser, OS, and resolution combinations globally.
Real-time debugging
LambdaTest offers pre-installed developer tools for major browsers and mobile devices for easy cross-platform site testing.
Inbuild Project Management Tool
Effortlessly participate in your projects, switch between project versions, & save your progress directly within the test environment.
Security & Privacy
We prioritize robust data security, privacy in product design, top-down governance, and regulatory compliance. Read more about security.
24/7 Support
Got questions? Throw them to our 24/7 in-app customer chat support, or email us on, [email protected]
Live App Testing on Real iPhone and Android Devices
Test your app on different devices to ensure a smooth experience for all users. Go to LambdaTest App Testing Cloud to run tests on devices from varying line-up and operating systems like old iPhones or latest Android phones and more.
Get Started For Free
Automation Cloud Grid on LambdaTest
Next-generation test automation cloud matches local test speeds, supports multiple frameworks and languages, accelerating release cycles for development and testing teams.
- Mobile
- Desktop
Automate Selenium and Appium Tests at Scale
LambdaTest allows you to run your Selenium and Appium tests on a cloud of 3000+ different desktop and mobile environments. Use it to make sure that your web app and mobile app works seamlessly on any environment.
Get Started For Free
Responsive Web Testing Made Easy
LT Browser helps you to test web apps on 50+ built-in device screens and unlimited custom screens, including PCs and smartphones. It integrates with almost every team collaboration software, and it's totally free to use!!
Get Started For Free
Test Locally Hosted Website and Apps On Cloud
Underpass helps you use the Lambda Tunnel to perform live testing of your locally hosted or privately hosted website or mobile app on online desktop and mobile environments. It's fast and easy to use and there are no complicated set up steps!
Get Started For Free
AI-Agentic Quality Engineering
Test AI agents such as chatbots and voice assistants to ensure efficiency, relevancy, and performance.More about Agent-to-Agent Testing
Experience the Power of Unified Testing Cloud
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
Gartner’s Magic Quadrant 2025
Recognized in Gartner's Magic Quadrant 2025 as a Challenger for strong customer experience.
Forrester’s Autonomous Testing Platforms Q3 2025
Featured in Forrester's Autonomous Testing Platforms Landscape, Q3 2025 for innovation in AI-driven testing.
Wall of Fame
TestMu AI is #1 choice for SMBs and Enterprises across the globe.
Enterprise-Grade Security
We safeguard your data and AI systems with global security, privacy, responsible AI, and ESG standards.
Integrations
Works where you work, 120+ integrations with the tools your team relies on.
Users
2.5M+
Tests
1.5B+
Enterprises
18K+
Countries
132
As Seen On
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
TestMu AI forEnterprise
Get access to solutions built on Enterprise
grade security, privacy, & compliance
- Advanced access controls
- Advanced data retention rules
- Advanced Local Testing
- Premium Support options
- Early access to beta features
- Private Slack Channel
- Unlimited Manual Accessibility DevTools Tests