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Best Functional Testing Software in 2026

Functional testing software helps you check whether applications behave as expected. Compare web, mobile, and desktop app coverage alongside cross-browser support and authoring mode to see what each option can address. Parallel runs and a self-hosted option may also affect how testing fits your setup. Free plans and paid-from prices are useful cost points to weigh. Maestro, testRigor, and WebdriverIO are among the entries to consider in light of the applications and testing workflow you need to support.

  1. 1

    Cypress

    Free plan Open source APILinuxMac+2

    Cypress combines browser-based application testing with cloud features for recorded CI runs and team workflows. Review the plan limits and public-project data visibility before choosing a Cloud setup.

    9.2 Free plan · paid from $67/mo (annual) · 30-day trial Visit site
  2. 2

    Selenium

    Free plan Open source APIExtensionLinux+4

    Selenium offers browser automation through WebDriver, IDE and Grid, with no listed price. Anyone deploying Grid should account for its default lack of authentication and restrict external access.

    8.7 Free plan Visit site
  3. 3

    TestCafe

    Free plan Open source AndroidAPIiPhone+5

    TestCafe combines browser-based end-to-end testing with API testing and a range of automation features.

    8.7 Free plan Visit site
  4. 4

    ACCELQ

    Free plan AndroidAPIiPhone+5

    ACCELQ brings broad test automation and manual test management capabilities into one platform. Its advertised trial offers a way to explore web and mobile cloud device farms before requesting pricing.

    7.7 Free plan · pricing on request Visit site
  5. 5

    Detox

    Free plan AndroidiPhoneLinux+2

    Detox offers React Native teams a free way to write and run mobile end-to-end tests, with flexible test-runner support.

    7.5 Free plan Visit site
  6. 6

    Appium

    Free plan AndroidAPIiPhone+5

    Appium offers a client-server approach to UI automation with multiple platform drivers and language clients.

    7.4 Open source Visit site
  7. 7

    BugBug

    Free plan APIExtensionWeb

    BugBug offers a low-code route from browser actions to automated tests, with YAML exports and a range of integrations.

    7.4 Free plan · paid from $99/mo (annual) · 14-day trial Visit site
  8. 8

    Katalon Studio

    Free plan AndroidAPIExtension+6

    Choose Katalon Studio if your team wants web, mobile, API and desktop test authoring in a shared project, with recorder and AI-assisted options.

    7.4 30-day trial Visit site
  9. 9

    Leapwork

    Free plan AndroidAPIiPhone+3

    Leapwork combines several forms of test automation with enterprise application validation and flexible deployment options. Teams need to request a custom quote to assess the paid platform.

    7.4 Pricing on request Visit site
  10. 10

    Maestro

    Free plan AndroidiPhoneLinux+3

    Maestro offers local, desktop and hosted ways to author and run mobile and web UI tests. Its Chromium-only web support and per-device Cloud pricing are key limits to weigh.

    7.3 Free plan · paid from $250/mo Visit site
  11. 11

    Nightwatch

    Free plan AndroidiPhoneLinux+3

    Nightwatch brings browser, service, API, component, and native mobile testing into one Node.js framework.

    7.3 Free plan Visit site
  12. 12

    Playwright

    Free plan LinuxMacSelf-hosted+2

    Playwright combines cross-browser automation, test authoring tools, and support for agent workflows. Teams can run it locally or in CI on Linux, macOS, and Windows.

    7.2 Free plan Visit site
  13. 13

    Robot Framework

    Free plan APILinuxMac+1

    Robot Framework offers a free, extensible foundation for several kinds of testing and robotic process automation. Users can turn to its forum and Slack community for questions and discussion.

    7.2 Free plan Visit site
  14. 14

    Functionize

    Free plan Web

    Choose Functionize if you need plain-language test authoring, cross-browser runs, or a connection from an MCP-compatible coding agent.

    7.0 Free plan · paid from $20/mo Visit site
  15. 15

    TestMu AI Web Automation (formerly LambdaTest Web Automation)

    Free plan AndroidAPIiPhone+5

    TestMu AI combines cross-environment execution with test authoring, debugging captures, and a tunnel for private apps.

    7.0 Free plan · paid from $29/mo (annual) Visit site
  16. 16

    testRigor

    Free plan AndroidAPIExtension+6

    testRigor combines plain-English test authoring with broad web, mobile, desktop, and API coverage.

    7.0 Free plan · 14-day trial Visit site
  17. 17

    WebdriverIO

    Free plan AndroidExtensioniPhone+4

    WebdriverIO spans browser, mobile, component, and desktop automation within a Node.js framework.

    6.9 Free plan Visit site
  18. 18

    uTest

    Free plan AndroidiPhoneLinux+3

    uTest offers testing projects, training, and tools for community members across multiple platforms.

    6.6 Free plan Visit site
  19. 19

    Avo Assure

    Free trial APILinuxWeb+1

    Avo Assure covers broad enterprise test targets with no-code creation, risk prioritization, and self-healing behavior.

    6.5 Pricing on request · 14-day trial Visit site
  20. 20

    BrowserStack Automate

    by BrowserStack
    Free trial AndroidAPIiPhone+3

    Choose BrowserStack Automate if your team needs automated checks across real desktop and mobile browser environments, with integrations and reporting in a managed grid.

    6.5 From $59/mo (annual) Visit site
  21. 21

    Endtest

    Free trial AndroidiPhoneMac+2

    Choose Endtest if your team wants no-code automated testing across web and mobile, with AI-assisted creation and failure analysis.

    6.4 From $175/mo · 14-day trial Visit site
  22. 22

    Keysight Eggplant Test

    Free trial AndroidAPIExtension+6

    Eggplant Test covers screen-based, model-based, visual, and API testing across a wide range of targets. Teams can request pricing or try it free, but there is no free plan.

    6.3 Pricing on request Visit site
  23. 23

    Kobiton

    Free trial AndroidAPIiPhone+2

    Kobiton offers several ways to run mobile testing, including real-device cloud access and on-premises deployment.

    6.3 From $83/mo Visit site
  24. 24

    mabl

    Free trial AndroidAPIiPhone+4

    mabl combines broad testing coverage with low-code authoring, recovery features, integrations, and self-hosted execution.

    6.3 Pricing on request · 14-day trial Visit site
  25. 25

    Ghost Inspector

    Free trial APIExtensionWeb

    Ghost Inspector combines recorded browser tests with scheduling, integrations, and team controls.

    6.2 From $109/mo (annual) · 14-day trial Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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