Free and open first

Best Software Testing Tools in 2026

Software testing tools support API, performance, mobile and other test work, with options for web, Linux, Windows, macOS, self-hosted setups and API use. This list is for people comparing tools by capability, platform and deployment model.

33 apps
Research read 28 Sept 2026
How the order is worked out

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

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

SoapUI

Free plan Open source APILinuxMac+2

SoapUI Open Source offers API testing, mocking, and command-line automation across major listed protocols.

8.7 Free plan Visit site
4

Apache JMeter

Free plan LinuxMacSelf-hosted+1

Apache JMeter offers protocol-level load testing, reporting and extensibility at no cost. It is not a browser-rendering tool, and load tests should run in command-line mode.

7.7 Free plan Visit site
5

BlazeMeter

Free plan APIExtensionLinux+2

BlazeMeter combines several testing types with service virtualization and AI-assisted test triage. Its listed free limits and paid plan details help clarify the scale available at each tier.

7.6 Free plan · paid from $99/mo (annual) Visit site
6

Cucumber Open

Free plan AndroidAPILinux+2

Cucumber Open pairs readable Gherkin specifications with code-backed test steps and reporting options. Consider the public, short-lived report links when deciding how to share test results.

7.6 Open source Visit site
7

Gatling

Free plan APILinuxMac+3

Choose Gatling if you need load, stress, API, or distributed testing and want code, no-code, or Postman-based test authoring.

7.5 Free plan · paid from €89/mo (annual) · 14-day trial Visit site
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.

7.5 30-day trial Visit site
9

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
10

Locust

Free plan APILinuxMac+3

Locust combines Python-authored tests with live reporting, adjustable load, and distributed execution. Its automatic OpenTelemetry instrumentation is currently limited to the requests library.

7.4 Free plan Visit site
11

NUnit

Free plan AndroidAPIiPhone+4

NUnit offers a free, MIT-licensed testing framework for several .NET languages, with dependency and repeat controls in version 5.

7.4 Free plan Visit site
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.

7.3 Free plan Visit site
13

Postman
by Postman
Free plan ExtensionLinuxMac+2

Postman combines API creation, testing, documentation, and monitoring in one platform, with a free plan and paid options. Check plan availability and the annual billing terms before choosing a tier.

7.3 Free plan · paid from $9/mo (annual) Visit site
14

Percy

Free plan AndroidiPhoneWeb

Percy combines browser-based visual comparisons with a workflow for reviewing diffs and tracking status.

7.2 Free plan Visit site
15

Grafana k6
by Grafana k6
Free plan Linux

Grafana k6 combines several kinds of testing with tracing, logging and profiling capabilities.

7.1 Free plan · 14-day trial Visit site
16

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.

7.1 Free plan Visit site
17

JUnit

Free plan Self-hosted

JUnit provides a structured testing stack with broad IDE and build integrations. Check runtime and Kotlin requirements, and treat Vintage as a temporary migration component.

7.0 Free plan Visit site
18

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
19

Qase

Free plan APIWeb

Qase connects manual and automated testing workflows with requirements traceability and integrations.

6.9 Free plan · paid from $35/user/mo (annual) · 14-day trial Visit site
20

Testiny

Free plan APISelf-hostedWeb

Testiny combines test authoring, execution tracking, automation results, and reporting, with both cloud and self-hosting choices.

6.9 Free plan · paid from $18.50/user/mo · 21-day trial Visit site
21

pytest

Free plan Linux

pytest offers test discovery, fixtures, detailed assertion feedback and broad test selection for Python projects.

6.8 Free plan Visit site
22

Applitools Autonomous

Free trial AndroidiPhoneSelf-hosted+1

Applitools Autonomous combines no-code authoring with several test types and maintenance grouping. Its paid Starter plan includes a 14-day trial, while higher plans use unlisted pricing.

6.6 From $667/mo (annual) · 14-day trial Visit site
23

BrowserStack Accessibility Testing
by BrowserStack
Free plan WebiPhoneAndroid

6.4 Free plan Visit site
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

Ranorex Studio

Free trial AndroidiPhoneWeb+1

Ranorex Studio combines visual test authoring with coded flows, parallel execution, and broad integrations.

6.1 Pricing on request · 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

Review available free plans, trial periods and open-source licensing, including the licence terms, before selecting a tool. Weigh paid entry prices, test management, parallel execution and the testing areas relevant to your work.

Questions

Does the list include free testing tools?

Yes. Apache JMeter, Appium, Cucumber and JUnit are examples of entries with free plans.

Which entries provide open-source code?

Appium and Cucumber are identified as open source.

Which listed products have free trial periods?

Applitools Autonomous and Gatling show 14-day trials, while Cypress provides a 30-day trial.

Are performance testing products included?

Yes. Performance testing is one comparison field, and LoadRunner Professional is marked for performance testing.

Which platforms and deployment choices appear?

Entries cover web, Linux, Windows, macOS, API use and self-hosted deployment.

Questions

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