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Online Selenium Testing Tool

Reliable Automated Testing With Selenium Testing Tool Online Test On Cloud Grid Of 3000+ Browsers And Operating Systems.

Online Selenium Testing Tool
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Next Chapter TestMu AI

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

Selenium Automation Testing Tool

Perform automated browser testing online & enhance your test automation coverage across 3000+ real desktop and mobile environments.

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Selenium Automation Testing Tool

Test On LambdaTest Real Device Cloud

Get instant access to real Desktop and Mobile devices. Say No to Emulators and Simulators! Find bugs earlier by testing your websites and web apps on a wide range of real Android and iOS devices. Ensure a seamless user experience and timely delivery on every release.

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Test On LambdaTest Real Device Cloud

Selenium Mobile Browser Automation

Automate your Selenium and Appium test scripts with Selenium testing tool and achieve faster go-to-market launch.

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Selenium Mobile Browser Automation

Parallel Testing With Selenium Testing Tool

Leverage our cloud based testing tool for Selenium and trim down your test cycles by running Selenium test scripts in parallel.

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Parallel Testing With Selenium Testing Tool

Perform Geolocation Testing With Selenium

Automate geolocation testing to test your website across 3000+ browsers from different locations across the globe.

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Perform Geolocation Testing With Selenium

Automate Accessibility Testing Effortlessly

Ensure web accessibility and achieve compliance with automated tests using TestMu AI Accessibility Automation.

Automate Accessibility Testing

Features To Accelerate Cross Browser Testing

It's not just about infrastructure, you get a whole range of complimentary features that will make your online cross browser testing experience smoother and help you ship products faster.

Test Locally hosted pages

Test Locally hosted pages

Local hosted web testing to help you test and save your website or app from after deployment bugs.

Enterprise-Grade Security

Enterprise-Grade Security

We are SOC2 Certified, GDPR Compliant, and CCPA Compliant platform.

Cost-Effective Pricing

Cost-Effective Pricing

Access the device and run any number of tests without breaking your budget.

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

Experience the Power of Unified Testing Cloud

Seamless Collaboration
via Integration

Connect to dozens of applications to test directly with TestMu AI.

Explore All Integration
airtable integration
asana integration
bamboo integration
bitbucket integration
circle integration
click-up integration
datadog integration
github integration
gitlab integration
jira integration
k6 integration
linearapp integration
matternost integration
microsoft-azure integration
microsoft-teams integration
miro integration
monday.com integration
new-relic integration
notion integration
paymo integration
practitest integration
semaphore integration
slack integration
trello integration
user-back integration
youtrack integration
paymo integration
vectorvector

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

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 @testmuai see more >

TestMu AI

Best Egg

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!see more >

KaneAI

Suryateja Goud

Suryateja Goud

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microsoft

See how @testmuai is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.

TestMu AI

Microsoft India

Microsoft India

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