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Online Web Testing Platform
Check your websites and web applications in all major browsers with LambdaTest.
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."
Live Web Testing on 3000+ Environments
Test your website across 3,000+ OS and browser combinations. Instantly access various browsers, versions, and resolutions for detailed testing.
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Increase Device Coverage
Test your website's responsiveness and compatibility on iPhones and Androids. Choose from our extensive pool of over 3,000 real devices.
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Web Testing with Scheduled Screenshots
Run visual tests automatically across 3,000+ environments on LambdaTest. Schedule tests and capture screenshots at set intervals for detailed insights.
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Responsive Web Testing with LT Browser
Test your website's responsiveness in LT Browser with a single click. Select from 50+ viewports or customize your own to see how the website behaves.
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Features To Accelerate Web Testing
It's not just about infrastructure, you get a whole range of complimentary features that will make your online web testing experience smoother and help you ship products faster.
Plugins & Extensions
Dedicated WordPress plugin and Chrome Extension to help you perform web testing and capture full-page screenshots.
Test Locally hosted pages
Local hosted web testing to help you test in dev environments and save your website or app from after deployment bugs.
Geolocation testing
Test your website or mobile app from different geoIPs to make sure your users get the perfect experience across all locations.
AI-Agentic Quality Engineering
Plan, author, and evolve end-to-end tests using natural language.More about KaneAI
Experience the Power of Unified Testing Cloud
Seamless Collaboration
via Integration
Connect to dozens of applications to test directly with TestMu AI.
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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
2M+
Tests
1.2B+
Enterprises
10K+
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.
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