Compare the Top Free Functional Testing Tools as of April 2025

What are Free Functional Testing Tools?

Functional testing tools are software platforms designed to verify that a system or application performs as expected according to its functional requirements. These tools automate the process of testing individual features and functionalities of an application to ensure they work correctly. Functional testing tools typically support a variety of testing types, including unit testing, integration testing, and user acceptance testing (UAT). They allow testers to simulate user interactions with the application, execute test cases, and identify bugs or issues in the functional behavior of the software. By automating repetitive testing tasks and improving accuracy, functional testing tools help accelerate the software development lifecycle and ensure high-quality releases. Compare and read user reviews of the best Free Functional Testing tools currently available using the table below. This list is updated regularly.

  • 1
    LambdaTest

    LambdaTest

    LambdaTest

    LambdaTest is a cloud-based testing platform that provides developers with tools to perform automated and manual cross-browser testing, mobile app testing, and visual regression testing. It supports over 3,000 browser versions and real devices, ensuring seamless performance across platforms. LambdaTest’s AI-driven features, such as test orchestration through HyperExecute and its native test intelligence, help teams reduce test execution time and enhance productivity. The platform also includes tools like Selenium, Cypress, and Appium integrations, enabling rapid and efficient test creation for both web and mobile applications.
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    Starting Price: $15.00/month
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  • 2
    Boozang

    Boozang

    Boozang

    Build. Test. Automate. Empower your whole team to build and maintain automated tests, not just developers. Meet your testing demands fast. Get full test coverage in days, not months. Our natural-language tests are extremely stable to code changes. When tests break our AI will repair it in minutes. Go Agile/DevOps by setting up Continuous Testing. Push features in production the same day. Boozang supports the following test approaches: - Codeless Record/Replay interface - BDD / Cucumber - API testing - Model-based testing - HTML Canvas testing The following features makes your testing a breeze - In-browser console debugging - Screenshots to show where test fails - Integrate to any CI server - Test with unlimited parallel workers to speed up tests - Root-cause analysis reports - Trend reports to track failures and performance over time - Test management integration (Xray / Jira)
    Starting Price: $249 USD / month / user
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  • 3
    Sauce Labs

    Sauce Labs

    Sauce Labs

    Sauce Labs provides the world’s largest continuous testing cloud for web and mobile applications, giving development teams at the world's top digital brands access to a comprehensive and trusted solution they can use to deliver apps faster without compromising quality. Release better mobile apps to the market faster with extensive device and test coverage, streamlined beta app distribution, best-in-class error monitoring, and continuous feedback loops throughout your app development cycle. Ensure that your mobile apps work as they should in real-world scenarios, on any device, any browser, every time. Sauce Labs end-to-end mobile quality solutions enable organizations delivering mobile apps in the modern era of DevOps-driven development to achieve quality at speed throughout all stages of the app development journey - from development to production. No matter your testing needs,the application type you are developing, or your role in the mobile app SDLC, we've got you covered!
    Starting Price: $19 per user per month
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  • 4
    Cerberus Testing

    Cerberus Testing

    Cerberus Testing

    Cerberus Testing is a low-code software testing automation enabling continuous testing at scale. Using the solution you can remove years of implementing an internal testing framework. The product enables you to quickly iterate through your testing lifecycle, from test repository, execution, reporting and analytics. The solution allows the collaboration of the teams from the use-cases definition to the test case execution on the variety of browsers, devices, apps and APIs. You can leverage your own or external robots infrastructure to execute your test at scale, enabling you to focus on your business value. It supports various integrations for speed of implementation such as Jenkins, Bitbucket, Slack, Kafka. It is available and maintained in open-source by various digital and retail players such as La Redoute, Decathlon, Adeo, and Norauto.
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    Starting Price: €0
  • 5
    Eggplant

    Eggplant

    Keysight Technologies

    At Eggplant we empower organizations to create amazing digital experiences. We help businesses to test, monitor and analyze their end-to-end customer experience and continuously improve their business outcomes. Companies worldwide use Eggplant to surpass competitors, boost productivity, and delight customers. How? By dramatically enhancing the quality, responsiveness, and performance of their software applications across different interfaces, platforms, browsers, and devices - including mobile, IoT, and desktop — in agile, DevOps, and innovative application and data environments. As software release cycles accelerate, manual testing can't keep up. AI automatically discovers user journeys, hunts for bugs and performs image-based UI tests from the user POV. Build better software with fast, broad, accurate AI-powered testing. To keep up with DevOps, continuous testing is key, streamlining development and automating the testing process.
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