Top 20 Automation Open-Source Testing Tools

Updated: Jul 12

Automation testing is the process of testing software and other tech products to ensure it meets strict requirements. It is used to identify bugs and can be run without any functional knowledge. These testing tools support testing activities such as automation and manual testing, functionality, regression, load, performance, stress, and unit testing, as well as testing on the web, mobile devices, and desktop computers.

1. Selenium




Selenium is one of the best open-source testing tools that is available today. It is a fantastic, automated testing solution for web apps since it works with a wide range of programming languages, testing frameworks, browsers, and OS systems. It helps you to create highly effective test scripts for regression testing, exploratory testing, and quick bug reproduction.


2. Cucumber



It is an open-source tool based upon the concept of Behavioral Driven Development using which Cucumber allows you to do automated acceptance testing by executing examples that optimally describe the behavior of the application. It supports multiple operating systems and is compatible with Ruby, Java, and.NET. The amazing feature of Cucumber is that it enables you to have a single living document that serves as both the specification and test documentation.


3. Sikuli




An open-source testing tool - Sikuli can automate anything that is displayed on the screen and is based on the idea of image recognition. Automating desktop programs that are not web-based is very handy. It is renowned for its rapid bug reproduction as well.



4. Appium




Appium open-source test automation framework is primarily envisioned for mobile apps. It facilitates the development of iOS and Android applications thanks to its client/server architecture. Due to its simple installation and use, it is a popular mobile automation testing tool.


5. TestNG




TestNG is an open-source testing framework enthused by Junit and Nunit with some new features added to make it a more powerful tool. It supports practically all types of testing, including end-to-end testing, data-driven testing, functional testing, integration testing, and unit testing. Annotations, sizable thread pools, configurable test configuration, support for parameters, various tools, plug-ins, etc. are just a few of its amazing features.


6. k6





k6 is an open-source load and performance testing tool for testing cloud-native applications, APIs and microservices. It’s a modern developer centric CLI tool with test cases written in ES6 JavaScript and with built in support for HTTP/1.1, WebSocket and HTTP/2 protocols. K6 was created with automation in mind and is simple to integrate into automation processes in Jenkins, GitLab, Azure DevOps Pipelines and other CI/CD tools for performance regression testing.


7. Marathon




Marathon is an open-source test automation framework which is designed to test Java-based GUI applications. The primary use of this tool is acceptance testing. You can generate test reports as well as record and playback the tests. If you are testing a tiny project and your application's screen size is restricted to 10 screens, you should use Marathon.


8. Testlink




Test Link is an open-source web-based test management tool, which is primarily featured for test plans, test cases, user roles, test projects and test specifications. It supports multiple operating systems and integrates nicely with other bug tracking tools like JIRA, Bugzilla, Redmine, etc.


9. SoapUI




SoapUI is an extremely popular open-source API (Application Programming Interface) Test Automation Framework for SOAP & REST. It is the most widely used automation tool for testing web services and web APIs of SOAP and REST interfaces. It is a boon for testers to test functional and non-functional testing, such as automated testing, functional, load testing, regression, simulation and mocking without hindrance because its user interface is quite simple to use. It supports various standard protocols such as HTTP, HTTPS, REST, AMF, JDBC, SOAP, etc., that exchange information in structured data such as XML, plain text or JSON, etc.


10. Apache JMeter




Apache JMeter is an open-source Java desktop app which is intended for web applications’ load testing. It also supports unit testing and limited functional testing. Additionally, it enables some functional testing and unit testing. It supports several types of programs, protocols, shell scripts, Java objects, and databases and provides many useful features like dynamic reporting, portability, a strong test IDE, etc.


11. Robotium