Cross Browser Test Automation for your
Web Applications
Create tests in plain English that work across Chrome, Safari, Firefox, Edge and even APIs without rewriting or duplicating effort
Self-healing tests adapt to UI and browser changes automatically with AI agents running them in parallel for faster feedback
Achieve full coverage with cross-browser, cross-device, and API test execution across 3000+ real web and mobile environments
Get started now for FREE
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Trusted by high-performing
Quality Engineering teams
10X
Faster Test Development
90%
Lesser Test Maintenance
30%
Shorter Development Cycle


Test Once, Validate Everywhere - Across
Browsers, OS, and Screen Sizes
10x Faster Test Authoring with AI Agents

Generate cross-browser test cases instantly from design files, user sessions, or plain English instructions. Go from idea to execution in seconds, no code, no delays.

Run One Test Across All Browsers, Automatically

Write a test once, and Atto runs it across Chrome, Safari, Firefox, and Edge without rewriting. Speed up test execution and ensure consistent user experiences everywhere.

Self-Healing to Eliminate Flaky Tests

Atto’s self-healing AI agents auto-detect and fix broken tests caused by element changes across browsers so you spend less time debugging and more time shipping.

Real-World Conditions, Fully Simulated

Test how your apps perform in real conditions with network throttling, geolocation, and OS-specific behavior. Atto adapts to responsive layouts and browser quirks automatically.

Built for CI/CD and DevOps Pipelines

Plug into your CI/CD tools, VCS, and bug trackers. Every commit auto-triggers AI-powered tests—without slowing down your release cycles.

Continuous Feedback from Every Commit

Automate tests on every pull request or commit to catch issues early. Get fast, actionable feedback at every stage of development before bugs reach production.

Cloud-Based Platform for
End-to-End testing
One platform to test web, mobile, desktop apps, and APIs

Seamlessly Fits Into Your Testing Workflow
Testsigma integrates with all your favourite tools, including JIRA, Jenkins, Azure DevOps, GitHub, and Bamboo to achieve continuous testing and feedback at DevOps speed. Ultimately, accelerate your release cycles and reduce time-to-market.

Testament of the Value Delivered
Recent Resources

Frequently Asked Questions
Testsigma supports automated browser testing across a wide range of browsers and OS, including but not limited to Chrome, Firefox, Safari, Microsoft Edge across Windows, Mac, and Linux. This ensures comprehensive cross-browser testing for your web applications.








