Best Free Functional Testing Tools of 2025

Compare the Top Free Functional Testing Tools as of July 2025

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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 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.

32 Ratings

Starting Price: $15.00/month

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2

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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3

Katalon Studio

Katalon

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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4

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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