Fast, reliable QA testing

Powered by AI, perfected by humans. Ranger writes and maintains QA tests that find real bugs so you can keep moving forward.

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Trusted by the fastest-growing teams
Yurts
Suno
Dust
Rogo
Clay
The Lasso
Rivet
WHY RANGER?

The solution to
endless QA cycles

Ranger handles every facet of QA testing, so you don't have to.
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A
Save 200+ hours per year
Our customers reported saving 200+ hours per engineer per year from tedious testing, freeing you up to ship new features.

*2025 customer survey
B
Ship features faster
Ranger runs continuous end-to-end testing coverage that keeps pace with your team, so you can build without blockers. 
C
Find and fix real bugs
Ranger delivers clear product signals, so you can feel confident that the bugs we flag are real. 
Testimonials

Software teams rely on Ranger

“To elicit capabilities, we work with Ranger, which developed a browsing harness...We find that using an external scaffold enables us to measure capabilities in real-world deployments.

OpenAI o1 Research Paper

OpenAI o1 Research Paper

@

“Ranger built an incredibly useful technology enabling agents to navigate and test complex interfaces in unprecedented ways. Dust has no plan to build a QA pipeline, it's Ranger all the way down.

Stan Polu

Stan Polu

Co-Founder & CTO

@

Dust

Co-Founder & CTO

Dust

“Ranger has an innovative approach to testing that allows our team to get the benefits of E2E testing with a fraction of the effort they usually require.”

Brandon Goren

Brandon Goren

Software Engineer

@

Clay

Software Engineer

Clay

“We’ve loved our experience with Ranger. They make it easy to keep quality high while maintaining high engineering velocity. We are always adding new features, and Ranger has them covered in the blink of an eye.”

Martin Camacho

Martin Camacho

Co-Founder

@

Suno

Co-Founder

Suno

“As an AI leader in finance, we rely on Ranger to keep our core flows rock-solid while we innovate rapidly. Their reliable test maintenance saves each product engineer five hours every week, giving us the freedom to focus on cutting-edge financial AI without worrying about bugs slipping through.”

Tumas Rackaitis

Tumas Rackaitis

Co-Founder & CTO

@

Rogo

Co-Founder & CTO

Rogo

Ranger helps our team move faster with the confidence that we aren't breaking things. They help us create and maintain tests that give us a clear signal when there is an issue that needs our attention."

Matt Hooper

Matt Hooper

Engineering Manager

@

Yurts

Engineering Manager

Yurts

“To elicit capabilities, we work with Ranger, which developed a browsing harness...We find that using an external scaffold enables us to measure capabilities in real-world deployments.

OpenAI o1 Research Paper

OpenAI o1 Research Paper

@

“Ranger built an incredibly useful technology enabling agents to navigate and test complex interfaces in unprecedented ways. Dust has no plan to build a QA pipeline, it's Ranger all the way down.

Stan Polu

Stan Polu

Co-Founder & CTO

@

Dust

Co-Founder & CTO

Dust

“Ranger has an innovative approach to testing that allows our team to get the benefits of E2E testing with a fraction of the effort they usually require.”

Brandon Goren

Brandon Goren

Software Engineer

@

Clay

Software Engineer

Clay

“We’ve loved our experience with Ranger. They make it easy to keep quality high while maintaining high engineering velocity. We are always adding new features, and Ranger has them covered in the blink of an eye.”

Martin Camacho

Martin Camacho

Co-Founder

@

Suno

Co-Founder

Suno

“As an AI leader in finance, we rely on Ranger to keep our core flows rock-solid while we innovate rapidly. Their reliable test maintenance saves each product engineer five hours every week, giving us the freedom to focus on cutting-edge financial AI without worrying about bugs slipping through.”

Tumas Rackaitis

Tumas Rackaitis

Co-Founder & CTO

@

Rogo

Co-Founder & CTO

Rogo

Ranger helps our team move faster with the confidence that we aren't breaking things. They help us create and maintain tests that give us a clear signal when there is an issue that needs our attention."

Matt Hooper

Matt Hooper

Engineering Manager

@

Yurts

Engineering Manager

Yurts

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Don't let regression slow your progress
Ranger proactively tests your code so you can stop bug bashing and start building.
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Ranger 101

Faster product launches start here

We handle everything from infrastructure to E2E testing coverage, combining the power of AI with human oversight to create and manage your QA tests. 

(1) We use AI, supported by humans

Our web agent navigates your site based on your testing plan, generating Playwright as it goes. Humans review everything to make sure your tests work and the code is readable.

*Our web agent outperforms Anthropic Computer Use on WebVoyager.

(2) We catch real bugs

Our web agent automatically triages test failures. Then, our team of QA Rangers perform a comprehensive review to confirm the bug is real.

(3) We help you keep your momentum

Keep your team focused on your roadmap. We maintain your core flows and evolve our tests as you launch new features.

We test your site, so your site doesn’t test you

Ranger
AI-Only Tools
Manual QA

Helps you create your testing plan

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Runs tests as your code changes

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Integrated into CI/CD process

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Bugs triaged by us, not your users

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QA Expert reviews test code

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Human-readable code generated

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Tests auto-update with your product

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Test infrastructure hosted for you

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Flexible capacity as you scale

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Integrations

Ranger works where you work

Ranger handles the infrastructure setup for running tests, spinning up browsers to run quick and consistent tests for your team.
Slack Preview of Ranger
Slack

Where you talk

We integrate with Slack to give you real-time signals, keep your team in the loop, and tag stakeholders for visibility and action.

GitHubGitLab

Where you code

Your test suite runs as your code changes, with test results shared directly in Github.

Where you host

Ranger runs against staging/preview environments, allowing you to run crucial tests and catch potential bugs.

QA QUEstions?

FAQ

Who writes the tests? AI? Engineers?

Both! Ranger is a bit like a cyborg: Our AI agent writes tests, then our team of experts reviews the written code to ensure it passes our quality standards. 

Our team checks that your code is:

1) built correctly

2) readable to other humans

3) is going to be reliable for your team

We love where AI is heading, but we’re not ready to trust it to write your tests without human oversight. With our team of QA experts, you can feel confident that Ranger is reliably catching bugs.

Who is Ranger best suited to help?

Anyone with a web-based product should be thinking about end-to-end testing. We work best with teams that are focused on building and shipping fast. If that’s you, send a note to howdy@ranger.net to get started.

Do I need to have test automation and infrastructure in place?

Nope! We work with products at every stage, whether you’re new to Playwright or looking to migrate an existing suite of tests.

Our team of QA experts will walk you through the process of putting testing on easy mode. We take care of everything, from creating and maintaining your tests to the infrastructure needed to run them.

How does Ranger’s pricing work?

We base our annual contracts on two main factors: how wide ranging your test suite is and how often you run your tests. Once we chat about your testing needs, we can customize a quote for you.