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The Most Advanced
REST SOAP GraphQL
API Testing Tool in the World

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SmartBear Named a Leader in Gartner Magic Quadrant for Software Test Automation
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The Complete API Test Automation Framework for SOAP, REST and More

Open Source
Professional

Millions of Downloads. Millions of Users. The most trusted API Testing tool on the market.

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API Functional Testing

Functionality doesn't stop at the GUI level. Learn about how to make sure your API functions as intended, every time.

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API Performance Testing

Performance is the bottom line of your API driven business. Load Test Virtual Users for your API and see how well it performs.

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API Security

Worried about third party APIs, public APIs, or vulnerable internal APIs? Learn how to safely secure them all.

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API Mocking

A properly designed, built and tested API can take valuable resources from your business. Save time and money with virtualization.

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Data-Driven Testing

Test faster and smarter with data-driven testing, increasing your API testing coverage overnight.

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Test Reporting

Need metrics, statistics and other testing data? Get detailed, comprehensive API test reporting to improve testing and measure success.

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We Make APIs Great

No one knows APIs better than SmartBear. As the makers of Swagger and SoapUI, we're trusted by millions of API teams to ensure API quality in every step of the API delivery lifecycle - from design to deployment. We've been helping API development and testing teams build exceptional APIs for over 10 years.