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
    Sahi Pro

    Sahi Pro

    Tyto Software Pvt Ltd

    Sahi Pro is a no-code test automation tool for web, desktop, mobile, and SAP applications. Sahi Pro empowers business testers and automation engineers to streamline their test automation processes. Sahi Pro reduces the time, effort, and complexity involved in test automation, making it an ideal choice for various domains including automobile, healthcare and BFSI. Features: 1. Non-flaky Test Execution - For reliable test results and reduced time wastage in analysis of false-positives or false-negatives. 2. Supports Multiple Technologies - Achieve end to end automation across technologies. 3. No-code Automation - Enable non-technical business testers to automate. 4. Integrations - Integrate and work with your existing ecosystem. Testers using Sahi Pro easily automate complex tests without writing code. With Sahi Pro, you can achieve faster release cycles, improved software quality, & reduced costs. Our customers love Sahi Pro for its speed, flexibility, and ease of use.
    Starting Price: $1499/year/user
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  • 2
    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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  • 3
    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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  • 4
    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
  • 5
    Testim

    Testim

    Tricentis

    Testim is the fastest path to resilient end-to-end tests—codeless, coded or both. Testim lets you create amazingly stable codeless tests that leverage our AI, but also the flexibility to export tests as code. You can leverage Testim’s modern JavaScript API and your IDE to debug, customize or refactor tests. Store them in your version control system to keep them in sync with branches and run tests on every commit. Run parallel, cross-browser tests on our test cloud or Selenium-compatible grids while integrating with your CI and dev tools to run smoke tests on pull requests, end-to-end tests on release candidates, or full regression suites on a schedule. Customers like Microsoft, Salesforce, NetApp, Wix, and JFrog run millions of tests on Testim each month. Learn more on our website and sign up for your free account!
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    Starting Price: $20,000 a year
  • 6
    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
  • 7
    ZAPTEST

    ZAPTEST

    ZAPTEST Inc.

    ZAPTEST is a leading Free and Enterprise software test automation and RPA tool. Offerings include Computer Vision technology that allows for Cross-Platform digital interface automation for UI, API, Load testing, and RPA in a seamless process. Combine that with our 1SCRIPT methodology, seamless automation, parallel execution, and unlimited licenses– you get an efficient testing suite that generates up to 10X ROI. We promise that if you can perform a procedure via any digital interface (live application or mockup) manually, ZAPTEST can automate this procedure As-Is! With ZAPTEST’s Enterprise Solution subscription program, you receive unlimited licenses across the entire organization. Regardless of whether your automation needs increase, your cost remains fixed. FARM allows ZAPTEST users to manage all of their devices so you can remotely control cross-environments and projects from any location. ZAPTEST uses many practical applications to enhance its software testing software capabilities
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    Alithya GoTest
    Alithya GoTest is a collaborative test hub that is easy and quick to master and integrate, ensuring the quality of any professional digital solutions for companies requiring reliability without compromises. Ensure the quality of your application without sacrificing speed or agility with an easy-to-use, GUI test automation tool. Whether using scripts or not, our flexibility is unmatched, letting you create manual, automated or hybrid test suites for every desktop, web, and mobile application with ease including .Net, Java, WPF and Windows 10, modern JavaScript frameworks like React and Angular and iOS or Andoid with 2050+ browser and platform configurations. No need to jailbreak your devices. Alithya GoTest comes with a keyword library of over 1500 keywords, so you can ensure your GUI and API tests are scalable, robust, and easy to maintain. Alithya also offers consulting, coaching and training to ensure the success of your teams.
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    Protractor

    Protractor

    Protractor

    Protractor is an end-to-end test framework for Angular and AngularJS applications. Protractor runs tests against your application running in a real browser, interacting with it as a user would. Protractor is built on top of WebDriverJS, which uses native events and browser-specific drivers to interact with your application as a user would. Protractor supports Angular-specific locator strategies, which allows you to test Angular-specific elements without any setup effort on your part. You no longer need to add waits and sleeps to your test. Protractor can automatically execute the next step in your test the moment the webpage finishes pending tasks, so you don’t have to worry about waiting for your test and webpage to sync.
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    Testable

    Testable

    Testable

    A seamless experience across different types of tests. Reuse the same test scripts whether you are testing a web app across thousands of browser, OS, and device combinations, validating your APIs functionality, or running huge load tests. Enterprise-ready SaaS platform hosted by Testable in the cloud. Run your tests in the cloud or on-prem using your favorite open-source tools and let us handle the test execution, real-time reporting, analysis, and storage securely in the cloud. Securely host our testing platform on your own infrastructure behind your firewall. Modern, scalable, flexible packaging options including our one-click Kubernetes Helm package. Run your functional test on multiple browser, OS, and device combinations as part of a single test run. View a real-time report that includes live interactive sessions and videos for each virtual user, screenshots, assertions, performance metrics, trend analysis, and more.
    Starting Price: $99 per month
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    OpenTest

    OpenTest

    OpenTest

    OpenTest is a free and open source functional test automation framework for web applications, mobile apps and APIs, built for scalability and extensibility, with a focus on enabling the mainstream test automation practices. OpenTest is a feature-reach tool that requires little to no coding skills and can handle virtually any type of functional test automation project. Keywords are high-level building blocks which hide the complexity of the underlying technology and let you build concise, readable and maintainable tests. No coding skills required.Run multiple test sessions in parallel, limited only by the available hardware resources. When you've maxed out your local machine(s), spin up more test actors in the cloud(s). JavaScript code can be embedded organically anywhere within your keyword-driven test to cover complex test scenarios. Run a test multiple times, over a set of data records maintained in a separate data file.
    Starting Price: Free
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    iMacros

    iMacros

    Progress

    The world's most popular web automation, data extraction, and web testing solution, now with Chromium browser technology for supporting all modern websites. Including sites that use dialog boxes, Javascript, Flash, Flex, Java, and AJAX. Perform in-browser testing across Chrome and Firefox. Write to standard file formats or use the API to save directly to a database. iMacros web automation software works with every website to make it easy for you to record and replay repetitious work. Automate tasks across Chrome and Firefox. There is no new scripting language to learn, allowing you to easily record and replay actions on each browser, so even the most complex tasks can be automated. Automate functional, performance, and regression testing across modern websites and capture exact web page response times. Schedule macros to run periodically against your production website to ensure it is up and running and behaving exactly as you expect.
    Starting Price: $99 per month
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    Katalon Studio
    An all-in-one test automation solution Get started in no time, scale up with no limit, for any team, at any level. Katalon Studio Robust test generation on all platforms Productive IDE to generate automated tests easily for all platforms and OSs, regardless of application complexity. Powerful recording utility for effortlessly storing all UI elements to maximize reusability. Codeless experience for beginners. Infinite testing extension for experts. Set Up Projects Built-in project templates Start immediately with ready-made templates, test case libraries, keywords, and object repositories. All kinds of end-to-end testing in one place Uniquely perform web, mobile, API, and desktop testing – all in a single project.
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    Screenster

    Screenster

    Screenster

    As you interact with a web page Screenster records your actions. No coding, no element ids, no adding checks and assertions. Rerun recorded test and let Screenster optimize it. Parameters are automatically extracted and self-healing selectors stored for all actions. Approve intended changes to the baseline and update the default state of the UI. Exclude one or several UI elements from comparison. No browser plugins, no desktop installs, no manuals to read. Just type a URL to a Screenster server and enjoy the ride. Screenster can intelligently detect visual and content changes. It has sophisticated algorithms that compare run results to the baseline and find new, deleted and changed content. Screenster smart selectors automatically locate moved and changed page elements. It discovers and adjusts timeouts and uses AI to wait for the right time to move to the next step. You can run your tests on our cloud, or download Screenster Server and install it on-prem.
    Starting Price: $100.00/month/user
  • 15
    Klaros-Testmanagement

    Klaros-Testmanagement

    verit Informationssysteme GmbH

    Klaros-Testmanagement is a proven and popular tool from Germany which is developed since 2009 and used worldwide by large and small teams to plan and execute their testing activities. The functional scope covers all areas of the test process: test planning, test creation, test execution, assignment and evaluation of test tasks as well as test evaluation and report creation. Interfaces to defect and requirements management systems, continuous integration, test automation and performance analysis exist for numerous tools such as JIRA, Redmine, GitLab, GitHub, Jenkins, JMeter, QF-Test, Selenium, JUnit, QTP, and many more. The software is available as a free Community Edition and an Enterprise Edition with comprehensive support, both as a server installation and as a cloud service.
    Starting Price: $30 per user/month
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    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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