Creates and runs web, phone, API and desktop tests with visual, coded or AI-assisted authoring.
Free plan Free trial From $1,000 a year AndroidiPhone & iPadWebWindowsMacLinux+3
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Best Functional Testing Software 2026
This list covers functional testing software and the fields buyers can compare before choosing a tool. It helps you check pricing, authoring, app coverage and deployment needs in one place.
The page compares free plans, paid starting points, trials, platform coverage, parallel runs, self-hosting and cross-browser support. Its order can change as the list is rebuilt nightly.
02
TestCafe
Free, open-source end-to-end test runner and framework for web testing.
AndroidiPhone & iPadWeb+5 Record6.6 Visit
03
testRigor
Generative AI creates and runs software tests written in plain English across web, mobile and API platforms.
AndroidiPhone & iPadWeb+6 Record6.6 Visit
04
Cypress
Cypress offers an open-source app and cloud service for front-end checks of web and API software.
WebWindowsMac+2 Record6.1 Visit
05
Maestro
Open-source UI testing framework for mobile and web apps using human-readable YAML flows and a local or cloud runner.
AndroidiPhone & iPadWeb+3 Record6.0 Visit
6
TestMu AI Web Automation (formerly LambdaTest Web Automation)
AndroidiPhone & iPadWeb+5 $29 a month, billed yearly Record6.0 Visit Runs Selenium tests on thousands of browser, operating-system and real-device combinations.
7
BrowserStack Automate
AndroidiPhone & iPadWeb+3 — Record5.8 Visit Runs browser automation in cloud or self-hosted setups for Android, iOS, macOS and Windows.
8
WebdriverIO
AndroidiPhone & iPadWeb+4 Free plan Record5.6 Visit WebdriverIO suits developers who write automated tests for websites, mobile apps, or supported desktop apps using Node.js.
9
ACCELQ
AndroidiPhone & iPadWeb+5 Free plan Record5.5 Visit ACCELQ suits teams managing automated and manual testing across web, mobile, and API products.
10
BugBug
WebBrowser extensionAPI $99 a month, billed yearly Record5.5 Visit Records Chrome browser interactions and turns clicks, forms and navigation into end-to-end web tests.
11
Keysight Eggplant Test
AndroidiPhone & iPadWeb+6 $9,999 one-time Record5.5 Visit AI platform automates end-to-end checks for web, phone, API, desktop and complex software.
12
Leapwork
AndroidiPhone & iPadWeb+3 Free plan Record5.5 Visit Enterprise validation platform for web, mobile, API and software lifecycle testing, including Playwright and visual regression.
13
Nightwatch
AndroidiPhone & iPadWeb+3 Free plan Record5.5 Visit Node.js framework for browser checks, service unit checks and HTTP API integration checks.
14
Detox
AndroidiPhone & iPadWindows+2 Free plan Record5.4 Visit Open-source JavaScript framework for React Native app flows on real devices or simulators.
15
Appium
AndroidiPhone & iPadWeb+5 Free plan Record5.3 Visit Open-source UI automation tools drive coded scenarios on phones, browsers, desktops, TVs and more.
16
Endtest
AndroidiPhone & iPadWeb+2 $175 a month Record5.3 Visit Agentic AI creates, manages and runs automated end-to-end checks for web and phone apps.
17
Perfecto
AndroidiPhone & iPadWeb+3 $83 a month Record5.3 Visit Cloud service for testing phone and web applications.
18
Selenium
WebWindowsMac+4 Free plan Record5.3 Visit Open-source tools automate web browsers locally or remotely, with WebDriver and a recording IDE.
19
uTest
AndroidiPhone & iPadWeb+3 Free plan Record5.3 Visit Freelance testing community and browser platform for functional, UX, accessibility, AI and payment testing.
20
Playwright
WebWindowsMac+2 Free plan Record5.0 Visit Web automation drives Chromium, Firefox and WebKit with one API, multiple languages and a test runner.
21
Squish
AndroidiPhone & iPadWeb+5 — Record5.0 Visit Automates GUI checks for Qt, Java, Windows, web, phone and embedded applications.
23
Kobiton
AndroidiPhone & iPadWeb+2 $83 a month Record4.9 Visit Kobiton runs mobile app checks through cloud, private, on-premises or hybrid device setups.
Before you choose
Compare free access and paid terms
Check the Free plan and Paid from fields together. Katalon Studio and Leapwork show free plans with pricing details available from their makers, while Perfecto lists a 14-day trial and no free plan.
Trial terms differ. testRigor lists a free plan and a 14-day trial, Katalon Studio lists a 30-day trial, and TestMu AI Web Automation lists a free plan with paid plans from $29 per month on annual billing.
Match the apps you need to cover
Review Web app coverage, Mobile app coverage and Desktop app coverage before choosing. The directory tracks web, Windows, iOS, Android, API and macOS support as separate platform fields.
A tool may fit one target better than another, so compare the platform fields against your own applications rather than relying on the product name.
Choose an authoring approach
Use the Authoring mode field to compare how a tool lets you create tests. Keep this separate from the app coverage fields, since authoring and supported targets answer different questions.
Check parallel runs and browsers
Parallel runs show whether the software lists concurrent test execution as a comparison point. Cross-browser support records browser coverage separately, so review both fields when browser breadth and run time matter.
Review hosting and code access
The Self-hosted option field helps you compare where a tool can run. If you need source access, check the licence details; Appium is listed as open source, while other entries use different pricing models.
Questions
Which functional testing tools list a free plan?
Katalon Studio, Leapwork, testRigor, Maestro, Detox, TestCafe, TestMu AI Web Automation, Tricentis Testim, WebdriverIO, Nightwatch and Appium are listed with free plans.
Which tools list a free trial?
Katalon Studio lists a 30-day trial. testRigor and Tricentis Testim list 14-day trials. Perfecto also lists a 14-day trial.
Which functional testing software is open source?
Appium is listed as open source. The directory also marks open-source status as a comparison field.
What platforms does the comparison cover?
The platform fields cover web, Windows, iOS, Android, API and macOS. Review the individual coverage fields for the target you need.
Does any listed tool show a paid starting price?
Maestro lists paid plans from $250 per month. TestMu AI Web Automation lists paid plans from $29 per month on annual billing.
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