Local Page Testing on 3000+ Real Browsers
Test your localhost, staged, or privately hosted website on 3000+ browser and OS combinations. No production push needed. Start local page testing in minutes with UnderPass.
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"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."
Everything You Need for Local Page Testing
UnderPass Tunnel.
Secure Local Page Testing With UnderPass Tunnel
Test your localhost or staged website on 3000+ real browsers without touching production. Testmu AI's UnderPass app creates a secure SSH tunnel between your local environment and the cloud in one click, no terminal, no complex setup, no firewall headaches.
Get Started For Free
- One-click tunnel activation from the UnderPass desktop app.
- Works behind proxies, firewalls, and private networks securely.
- Test HTML, CSS, PHP, Python, and any local file on 3000+ cloud browsers.
Browser Compatibility.
Cross-Browser Local Page Testing at Scale
Catch compatibility issues in your local environment before users ever see them. Run local page testing across Chrome, Safari, Firefox, Edge, and more on real Windows, macOS, Android, and iOS combinations, so every build ships with confidence.
Get Started For Free- 3000+ browser, OS, and device combinations for local page testing.
- Live interactive sessions to debug layout issues on the spot.
- Screenshot and video capture to document and share bugs instantly.
Automation Testing.
Automate Local Page Testing Across Real Browsers
Point your existing automation scripts at your localhost or staged environment via the UnderPass tunnel and run them across real browsers and devices on the cloud. Selenium, Cypress, Playwright, and Appium all work out of the box, no reconfiguration needed.
Get Started For Free- Run parallel local page tests across multiple browsers simultaneously.
- CI/CD ready with GitHub Actions, Jenkins, CircleCI, and GitLab CI.
- Full test logs, network logs, and session recordings for every local run.
Why Teams Choose UnderPass for Local Page Testing
One-Click Tunnel Activation
Start local page testing instantly. UnderPass activates a secure tunnel to Testmu AI's cloud with one click, no CLI, no SSH commands, no configuration required.
Multiple Tunnel Management
Run multiple local testing tunnels at the same time to cover different environments, branches, or staging servers without interruption or conflict.
Advanced Tunnel Configurations
Fine-tune your local page testing setup with proxy settings, custom ports, and environment-specific configurations that fit both simple and complex network requirements.
Instant Log Sharing
Copy and share tunnel logs in seconds. Speed up debugging during local page testing by giving your team direct access to connection and session data.
Clean, Intuitive Interface
UnderPass is built for testers, not just developers. The refreshed UI makes managing local testing tunnels, monitoring connections, and switching environments straightforward.
Flexible Authentication
Sign in with Google, GitHub, or SSO. UnderPass keeps local page testing secure and accessible for every team member without managing separate credentials.
Tutorial on TestMu AI UnderPass Tunnel
AI-Agentic Quality Engineering
Agent-to-Agent Testing
Test AI agents such as chatbots, voice assistants and more.
More about Agent-to-Agent Testing
Autonomous Testing
Detailed agent analysis under test, from the perspective of a synthetic end-user.
Multi-Persona Simulation
Diverse user personas like International Caller, Digital Novice and more.
Risk Scoring & Regression
End to end regression testing for agent under test with insights.
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
TestMu AI Named a Challenger in the 2025 Gartner® Magic Quadrant™
Read ReportTestMu AI recognized in The Forrester Wave™: Autonomous Testing Platforms, Q4 2025
Read ReportWall 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.
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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
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Excited to Share My Learning Journey with Kane AI & Lambda Tool!
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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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