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Web Application Testing Online

Test your webapps for compatibility across 5000+ different browsers, browser versions, and operating systems.

Web Application Testing Online
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LambdaTest is now TestMu AI

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Trusted by 2M+ users globally at

Microsoft
OpenAI
Nvidia
Boomi

"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"

Hrishi Potdar , Quality Engineering Architect

Boomi
GitHub
Best Egg

"We figured out a more efficient way to monitor system health and resolve failures earlier in lower environments."

Tenny , Engineering Operations Lead

Best Egg
Workday
Akamai
Louis Vuitton
NBCUniversal
City Furniture

"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."

Nicholas Paulsen , Senior Quality Engineer

City Furniture
Cox
Transavia

"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."

Daniel de Bruijn , Quality Assurance Automation Engineer

Transavia
Estée Lauder
TripAdvisor
Bohoo

Web App Testing on Various Environments

Run interactive tests on over 3000 browser configurations. Select browser type, version, OS, and resolution for thorough compatibility checks.

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Web App Testing on Various Environments

Increase Real Devices Coverage

Test your website's responsiveness instantly using our extensive real device pool, including iPhones and Androids. Access various devices with just a click.

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Increase Real Devices Coverage
...

2M+ Devs and QAs rely on TestMu AI

Deliver immersive digital experiences with Next-Generation Mobile Apps and Cross Browser Testing Cloud

Web App 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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Web Testing with Scheduled Screenshots

Responsive Web App Testing with LT Browser

Effortlessly test your application's responsiveness in LT Browser with a single click. Choose from over 50 viewports or create custom dimensions to assess your app's performance.

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Responsive Web App Testing with LT Browser

AI-Agentic Quality Engineering

Test AI agents such as chatbots and voice assistants to ensure efficiency, relevancy, and performance.More about Agent-to-Agent TestingArrowArrow

Agent-to-Agent Testing
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Trusted by Top Support Teams Worldwide

Dashlane

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.

Gartner's Magic Quadrant 2025

Featured in Forrester's Autonomous Testing Platforms Landscape, Q3 2025 for innovation in AI-driven testing.

Forrester's Autonomous Testing Platforms

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.

Enterprise-Grade Security, Privacy, AI Governance & ESG

Wall of Fame

TestMu AI is #1 choice for SMBs and Enterprises across the globe.

Wall of Fame

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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