The Best Software Testing Tools

In the ever-evolving landscape of software development, the quest for excellence has become synonymous with the pursuit of reliability, efficiency, and functionality. Software testing stands as a linchpin in this journey, ensuring that software meets the highest standards of quality.

Software testing is the process of evaluating and verifying that a software product or application operates according to its intended functionality. The advantages of testing include bug prevention, cost reduction during development, and the enhancement of overall performance. When development accommodates thorough testing, it enhances software reliability, resulting in the delivery of error-free, high-quality applications.

Here is our list of the best software testing tools:

1. Kualitee EDITOR’S CHOICE Designed to assist in managing test cases and tracking bugs, featuring a test case management system and an integrated defect management module. It provides real-time insights and customizable workflows. Its interface is user-friendly, which helps with streamlining the testing process for software projects.Start a 14-day free trial.
2. Veracode This comprehensive application testing platform provides code verification options including software composition analysis, container security scanning, dynamic application security testing, and static application security testing services. This is a SaaS platform.
3. Selenium This is an open-source project that provides a free Web application testing service within any standard browser.
4. JUnit This is a free testing framework for Java code on JVM.
5. NUnit Use this free open source package to test .NET and Mono-based systems with links through to third-party pipeline utilities. Available for Windows.
6. TestComplete This SmartBear product provides a replay model for test script creation and is offered in versions for Web applications, mobile apps, and Desktop software. Runs on Windows.
7. Katalon Studio This code quality assurance testing system is available in free and paid editions that run on top of Selenium.
8. BrowserStack This cloud-based platform provides testing for Web applications, websites, and mobile apps.
9. Apache JMeter This free testing tool supports code quality assurance for Java-based systems and it can also test mail, file transfer, and LDAP services.
10. Lyssna This cloud-based service is available in free and paid editions and it provides user surveys as well as testing services for Web interfaces.
11. Cypress This extensive testing system provides unit testing, interface assessments, and integration testing. Available as a cloud-based system or for installation on Linux, macOS, or Windows.

Types of software testing

There are various types of software testing, each serving a specific purpose in the software development lifecycle. Here are some of the most common types of software testing:

• Acceptance testing Verifying whether the whole system works as intended.
• Unit Testing This involves testing individual components or functions of the software to ensure they work as intended. It is usually performed by developers.
• Integration Testing Integration tests check the interactions between different components, modules, or services within the software to ensure they work together correctly.
• Functional Testing This type of testing verifies that the software’s functions and features perform as specified in the requirements.
• Regression Testing Regression tests are conducted to ensure that new code changes do not negatively impact existing functionality. It helps detect unintended side effects.
• Performance Testing Performance testing evaluates the software’s speed, responsiveness, and scalability. Types of performance testing include load testing, stress testing, and scalability testing.
• Security Testing Security testing assesses the software’s security features to identify vulnerabilities and ensure data protection.
• Compatibility Testing Compatibility tests verify that the software functions correctly on various devices, browsers, operating systems, and network environments
• Stress testing Testing how much strain the system can take before it fails. Considered to be a type of non-functional testing.

But in a world inundated with an abundance of software testing tools, selecting the right ones can be a formidable task. How does one navigate this labyrinth of options to find the tools that best suit their needs? In this article, we’ve curated a selection of software testing tools that cater to various types of software testing.

The Best Software Testing Tools

1. Kualitee (FREE TRIAL)

Tested on: Windows, Linux, and cloud

Kualitee is a platform of development management systems that are centered on a test case management service. The package interfaces to testing tools and runs a series of test cases through them. These test runs send results to the Kualitee dashboard as they arise.

Key Features:

• Requirements management
• Issue management
• Defect management
• Multiple integrations, including Jira
• Live test results

Why do we recommend it?

Kualitee is a test case manager that can be used for wider project management tasks. The system forms a central project library, holding functional requirements, technical specifications, test plans, test suites, test cases, and test scripts. The document base will also hold test run logs and results. Displaying a list of issues in the dashboard.

The results of software testing can alter plans, both project plans and product plans. Test cases can used to prove conformance with functional requirements and if those tests fail, rework is needed, meaning designs and timelines need to be adjusted. The Kualitee system has a document versioning system, so you can update plans and save them to the same file names without losing the older versions.

The test management platform can be set up to launch testers on a trigger, such as a piece of code being checked into a repository. This creates a continuous testing system for a CI/CD pipeline and can lead to software release or rework depending on the output of the tests. Coders can access test results with a prioritized and categorized issue list directly in the Kualitee dashboard and project managers can add comments to issues as they allocate the bug fix to a code. Programmers can also use the messaging system within the Kualitee environment to seek clarification on requirements.

Who is it recommended for?

Kualitee places different account conditions on its on-premises and SaaS versions. The on-premises system can only be paid on an annual license for a minimum of ten users, which creates a high upfront price. The cloud version has per-technician pricing and a monthly subscription price, which makes it more affordable.

The on-premises version of Kualitee is difficult to install and the provider’s support team will set it up for a fee. On-boarding is a lot easier with the cloud-based service. The cloud system has another advantage, which is that its free trial lasts for 14 days.

2. Veracode

Tested on: Cloud

Veracode is a widely recognized cloud-based security testing tool that specializes in application security. It offers a suite of solutions designed to identify, assess, and remediate security vulnerabilities in software applications. Veracode is trusted by organizations of all sizes, from startups to Fortune 500 companies, to help secure their software and protect against cyber threats. Veracode was named a Leader in The Forrester Wave™: Static Application Security Testing, Q3 2023.

Key Features:

• Dynamic application security testing
• Static application security testing
• Software composition analysis
• Container security scanning

Why do we recommend it?

Veracode is one of the leading security testing systems for Web applications. It aims to iron out security weaknesses before an application is released for use. The platform will identify open-source components that have weak security and should be replaced. It will also scan code for known security errors and run the application in a sandbox environment, looking for known vulnerabilities.

Veracode provides multiple security testing technologies such as DAST, SAST, IAST, SCA, and manual penetration testing, on a single platform. This empowers DevOps teams with the functionality to gain actionable insights for addressing security vulnerabilities.  Integrations exist for GitLab and IDEs such as Eclipse and IntelliJ, etc., helping developers to identify and remediate security vulnerabilities while they code. Its combination of SAST, DAST, IAST, SCA, and API security testing capabilities, along with its cloud-based platform and integration options, makes it a valuable asset for organizations committed to securing their software applications in an increasingly complex threat landscape.

Veracode provides multiple strategies for ensuring that Web applications aren’t released into production with security weaknesses in them. The platform starts with software analysis for modules, frameworks, APIs, and code libraries that are being considered by the project manager for inclusion in the development. Finished units are tested through code scanning and sandboxing before they are deemed fit for release and integration testing ensures that there are no security weaknesses in the coupling between functions

Who is it recommended for?

This package is designed for use by development teams the testing services of the Veracode platform can be integrated into a CI/CD pipeline for continuous testing. The tools are meant for use when assessing third-party components before approving them for inclusion in an application and also to verify the application before it is released.

A personalized solution demo is available for a free trial to enable you to assess its capabilities and make sure it’s the right fit for you and your organization before purchase. If you are interested in purchasing a Veracode security testing solution, you’ll have to go through a  reseller partner in your area.

3. Selenium

Selenium is a powerful and widely recognized open-source software acceptance testing tool primarily used for automating web application testing. With its extensive capabilities and flexibility, Selenium has become a staple in the toolkit of quality assurance and testing professionals.

Key Features:

• Runs in a Web browser
• Google Chrome, Firefox, and Microsoft Edge
• Record and replay tests
• Tests many Web application coding languages

Why do we recommend it?

Selenium is able to scan code written in PHP, Python, Java, Javascript/Node.js, C#, Groovy, Perl, Scala, and Ruby. The platform also acts as a framework and is used by some other testing tools to manage interactions with applications. It is also possible to write test scripts in Selenium’s own scripting language, which is called Selenese.

Selenium is the preferred choice for experienced Quality Assurance (QA) engineers who possess a high level of programming proficiency. Its setup and integration into your existing development process necessitate a thorough comprehension of framework mechanics. Selenium boasts compatibility with a diverse array of well-known operating systems (including Windows, macOS, and Linux) and browsers (such as Chrome, Firefox, and Safari), facilitating cross-environment testing. Nevertheless, incorporating Selenium into your CI/CD pipeline presents several challenges, as it demands a specific set of technical expertise and skills.

Selenium can handle dynamic web elements and complex web page interactions. It allows testers to perform tasks like form submissions, mouse movements, and keyboard inputs, simulating real user interactions. Parallel Test Execution: Selenium supports parallel test execution, allowing testers to run multiple tests simultaneously, reducing test execution time and speeding up the testing process

Who is it recommended for?

This package is suitable for testing Web applications that are under development. As such, its usefulness expires once an application is released into production. The tool doesn’t act as a vulnerability scanner for live systems, so it isn’t suitable for companies that subscribe to the applications written and supported by others.

In summary, Selenium is a versatile and robust software acceptance testing tool that excels in automating web application testing. Its cross-browser compatibility, support for multiple programming languages, and extensibility make it a popular choice for organizations looking to automate and streamline their web application testing processes. However, it’s important to consider factors such as the learning curve and ongoing maintenance when adopting Selenium for your testing efforts.

4. JUnit

JUnit is a unit testing framework for the Java programming language. JUnit has played a significant role in the advancement of test-driven development and is part of a group of unit testing frameworks collectively referred to as the ‘xUni’ family. It plays a crucial role in ensuring the quality and reliability of software applications by allowing developers to systematically test individual units or components of their codebase.

Key Features:

• Installs on Windows, macOS, Linux, or Unix
• Scans Java for JVM
• IDE integration

Why do we recommend it?

JUnit is a focused tool that advises coders as they write a program. This strategy enables the package to correct code line by line, catching errors before the program is even finished. This is a great help for programmers who often write a big chunk of code, only to find it won’t run and they don’t understand why.

Unit testing is a fundamental aspect of the software development process, where individual units or functions of a program are tested in isolation to ensure they perform as expected. JUnit is designed specifically for this purpose and provides a framework to create and execute unit tests. JUnit’s simplicity is one of its key strengths. Developers can write test cases by creating Java classes and annotating methods with JUnit annotations. These annotations define test methods and their expected outcomes, making it easy to structure and execute tests.

JUnit provides several annotations that allow developers to define test methods, set up preconditions, and handle post-test activities. Some commonly used annotations include @Test, @Before, @After, @BeforeClass, and @AfterClass. These annotations enable developers to control the test execution flow. JUnit test cases are executed by test runners, which can be run from the command line, integrated development environments (IDEs), or build tools like Apache Maven and Gradle. This flexibility makes it easy to incorporate unit testing into various stages of the development process.

Who is it recommended for?

This tool needs to be downloaded onto the workstation of each developer. However, it is free to use, so you don’t have to worry about the cost of many copies running on your site. The package is designed to support coders more than anyone else in the application development team.

JUnit supports parameterized tests, allowing developers to write a single test method that runs with different input values. This helps in reducing code duplication and improving test coverage. By facilitating unit testing, it helps identify and fix issues early in the development process, leading to higher software quality and faster development cycles. Its simplicity, wide adoption, and integration capabilities make it a valuable asset in any Java developer’s toolkit.

5. NUnit

NUnit is a powerful and widely used open-source software testing tool specifically designed for unit testing in the .NET ecosystem and Mono. It serves the same purpose as JUnit does in the Java world, and is one of many programs in the xUnit family. NUnit offers a suite of assertion methods (e.g., Assert.AreEqual, Assert.IsTrue, Assert.IsNull, etc.) that empower developers to validate the expected behavior of their .NET code.

Key Features:

• Runs in Visual Studio
• Standalone test console option
• Supports coders

Why do we recommend it?

NUnit is a useful tool for developers because it has two elements – one is an error checker for Visual Studio and the other is a unit tester. The unit tester can run newly developed .NET software, so this provides a tool for testers who aren’t directly involved in programming.

When a test fails, NUnit provides informative error messages to expedite debugging. NUnit tests can be executed using various test runners, including NUnit’s own console runner, third-party IDEs, and build automation tools such as MSBuild or Jenkins. This flexibility allows developers to seamlessly integrate unit testing into their development workflow. NUnit supports parameterized tests, enabling developers to create a single test method that can be run with multiple input values. This feature reduces code duplication and enhances test coverage.

Who is it recommended for?

This system is free and it is intended for use by businesses that develop applications in the .NET framework. The system runs on Windows and the IDE version installs directly into the Visual Studio environment as a plug-in. The testing unit can integrate directly into code management systems, such as GitHub ACtions and Azure DevOps.

Developers can group related test cases into test fixtures, facilitating the organization and execution of multiple tests as a cohesive unit. This is particularly helpful when dealing with complex test suites. NUnit enjoys strong support within the .NET development ecosystem. It integrates well with popular integrated development environments (IDEs) like Visual Studio and JetBrains Rider, as well as continuous integration (CI) systems such as Jenkins and Azure DevOps. The software is freely available for download.

6. TestComplete

TestComplete is a functional automated testing platform developed by SmartBear Software. TestComplete gives testers the ability to create automated tests for Microsoft Windows, Web, Android, and iOS applications. It is a versatile and feature-rich automation tool that caters to various testing needs including functional and regression testing, making it a popular choice among software quality assurance professionals.

Key Features:

• CI/CD pipeline integration
• Test desktop, Web, and mobile apps
• Runs on Windows

Why do we recommend it?

TestComplete is a high-end tool that is designed for use by large application developers. The system can test programs on Windows, and on iOS and Android mobile devices. It also has a cloud-based Web application testing service. Integration with Jenkins, Jira Git, and Azure DevOps enables development flow automation that includes tasting.

TestComplete enables both keyword-driven and data-driven testing approaches. Whether you are testing a Windows desktop application, a web app, or a mobile app for iOS and Android, TestComplete has you covered. The IDE offers features such as code completion, debugging, and a visual object recognition mechanism, making it accessible to both novice and experienced testers. Testers can record interactions with the application and then enhance or modify the generated scripts as needed.

Who is it recommended for?

This package is designed for use by big businesses because it is not cheap. Small businesses would be more likely to be interested in the free tools on this list. The service can test applications written in .NET, WPF, JavaScript, Python, and VBScript. Testers can write scripts or record and replay actions.

It seamlessly integrates with the CI/CD ecosystem through extensible plugins, offering compatibility with well-known CI/CD tools like Jenkins, GIT, and Zephyr. Alternatively, you can create custom plugins for tailored integration with your existing system. It also supports multiple scripting languages, including JavaScript, Python, and VBScript, giving you the flexibility to choose a language that aligns with your team’s skills and project requirements. A 14-day free trial is available on request.

7. Katalon Studio

Katalon Studio is an automation testing software tool developed by Katalon, Inc. The software is built on top of the open-source automation frameworks Selenium, and Appium with a specialized IDE interface for web, API, mobile, and desktop application testing. It is an all-in-one platform for low-code web, API, mobile, and desktop (Windows) automated testing including regression testing. With the prerequisites of coding lowered, Katalon Studio is ultimately designed to help teams speed up the SLDC and do quality assurance more productively.

Key Features:

• Test script creation
• Test execution
• Test case management

Why do we recommend it?

Katalon Studio is offered as a standalone service in the platform’s Free edition. However, higher plans include a cloud-based test launcher, called Katalon TestCloud, a command line version of Katalon Studio, called Katalon Runtime Engine, and a test management system, called Katalon TestOps.

The test automation framework provided within the Katalon Platform was developed with the keyword-driven approach as the primary test authoring method where users can create test scripts by combining pre-defined keywords and actions, and data-driven functionality for test execution. This approach simplifies test script creation and maintenance and encourages collaboration between testers and non-developers. Testers can create, edit, and manage test cases and suites using a simple and intuitive GUI. This minimizes the need for extensive coding knowledge, making it accessible to both technical and non-technical team members.

While Katalon Studio emphasizes a keyword-driven approach, it also supports scripting for those who prefer more advanced scripting capabilities. It uses the Groovy programming language, which is known for its simplicity and readability. Testers can quickly create test cases by recording interactions with the application under test. This record-and-playback feature is especially useful for creating initial test scripts.

Who is it recommended for?

This is a comprehensive system that will benefit larger developers more than smaller application coding teams. Those smaller teams can use the Free edition. However, that doesn’t include all of the modules of the platform, only the Katalon Studio service. The Katalon Runtime Engine is an important option for automated software development projects because it can be set up as a continuous tester.

Katalon Studio integrates with popular continuous integration and continuous delivery (CI/CD) tools like Jenkins and Bamboo, allowing for automated test execution as part of the software development pipeline. Katalon Studio offers both a free and paid version. The free version provides essential features, making it accessible to small teams and individual testers, while the paid version offers more advanced capabilities and support for larger organizations.

8. BrowserStack

BrowserStack is an Indian-based cloud software testing platform that specializes in compatibility testing for web and mobile applications. It has gained popularity among developers and quality assurance professionals for its set of features and a vast array of real browser and device combinations. BrowserStack provides developers with the ability to test their websites and mobile applications across on-demand browsers, operating systems, and real mobile devices.

Key Features:

• Cloud-based testing platform
• Models a range of browsers and OSs
• Automated visual testing

Why do we recommend it?

BrowserStack provides assessments on the layout of mobile apps and websites and the user journey through them. The tests will highlight any bugs and also spot dead-end paths, broken links, and slow-loading visual elements. The service will cycle through different OSs and browser versions, ensuring that apps and pages render successfully in all of them.

One of BrowserStack’s primary strengths is its ability to facilitate cross-browser compatibility testing. It provides access to a substantial selection of real web browsers, including popular options like Chrome, Firefox, Safari, Edge, and Internet Explorer. This allows you to ensure that your web application functions correctly and appears as intended across various browser versions. In addition to browsers, BrowserStack supports cross-platform compatibility testing. You can test your web application on different operating systems, such as Windows, macOS, iOS, and Android, across a wide variety of devices, including smartphones, tablets, and desktop computers.

BrowserStack provides real devices for mobile app testing, allowing you to validate your mobile applications on actual smartphones and tablets. It also offers emulators and simulators for testing when real devices are not available. BrowserStack seamlessly integrates with continuous integration and continuous delivery (CI/CD) pipelines. It provides plugins for popular CI/CD tools like Jenkins, Travis CI, and CircleCI, enabling automated compatibility testing as part of your development workflow.

Who is it recommended for?

This package is suitable for any company that develops mobile apps and websites. The system is available in a desktop-only edition that tests how websites appear on browsers running on Windows and macOS. There is also an edition that checks on mobile apps on iOS and Android devices as well as websites accessed on PCs and Macs.

BrowserStack operates a flexible pricing and licensing model that caters to the diverse needs of organizations and teams, ranging from individual testers to large enterprises. The pricing structure takes into account factors such as the number of users, the type of testing (desktop, web, or mobile), and the level of access required. A free trial is available on request.

9. Apache JMeter

The Apache JMeter application is a 100% Java-based open-source software designed for load testing functional behavior and performance measurement of applications, websites, and web services. It was originally developed by the Apache Software Foundation and has gained popularity in the software testing community for its extensive capabilities, flexibility, and ease of use.

Key Features:

• Tests Java
• Test creator/editor
• Results include bug information

Why do we recommend it?

JMeter is a free utility for testing applications written in a number of protocols, including HTTP, SOAP, REST, FTP, and SMTP. Web server responses can be written in HTML, JSON, XML, or text-based scripting languages. The test facility provides methods to record, build, and debug test plans. Results can be stored for later analysis or presented in HTML reports.

JMeter relies on plugins for its architecture. These plugins provide various functions and help in creating and running test plans efficiently. JMeter can assess the performance of websites, applications, and servers, both static and dynamic. It can simulate heavy loads to evaluate their capacity and performance under different conditions.

Who is it recommended for?

This tool has a command-line mode for running tests on various operating systems. The package will install on any operating system that supports Java, so you can run it on Windows, Unix, macOS, and Linux. It supports multithreading for concurrent sampling and can handle different functions with separate thread groups.

Apache JMeter is an excellent choice for conducting stress tests and gaining insights into the performance and scalability of your software applications and services. Its wide range of features, active community, and flexibility make it a valuable tool for any performance testing effort.

However, it’s important to note that creating effective stress tests requires a good understanding of performance testing principles and best practices. Additionally, it’s crucial to carefully design your test scenarios to simulate realistic load patterns that your application might encounter in production.

10. Lyssna

Lyssna – formerly UsabilityHub – is a specialized software testing tool designed for conducting usability testing and user experience (UX) research. It provides a user-friendly and intuitive platform for creating and analyzing usability tests, making it a valuable resource for developers, designers, and product teams looking to improve the usability of their websites and applications.

Key Features:

• Survey management
• Interface assessments
• Usability scoring

Why do we recommend it?

Lyssana is concerned with assessing the usability of a website or mobile app. The factors that contribute to an assessment include the clarity of the display in a Web page, its delivery time, and the ease of accessing different features through a menu system. Problems might have technical roots but these need to be explored in some other environment.

Lyssna offers flexible pricing options from free, to basic, to professional and enterprise plans designed to suit teams of all sizes. This makes it accessible to both small startups and large enterprises. It comes with a variety of usability testing methods that cater to different aspects of user experience evaluation.

Some notable testing methods include:

• First-Click Tests Participants are asked to perform specific tasks on your website or app and click on what they believe is the correct first step. This helps identify users’ initial expectations and understand whether they can find crucial information or features quickly.
• Preference Tests Participants are presented with alternative design options, and they choose the one they prefer. This helps in making informed design decisions based on user preferences.
• Five-Second Tests Participants view a design for just five seconds and then answer questions about what they remember. This can reveal if the core message or purpose of a design is immediately clear.
• Navigation Tests Participants are given a task to find specific information on a website. This helps identify navigation and information architecture issues.

Who is it recommended for?

This tool is suitable for businesses that produce websites and mobile apps. This is a consumer testing package that will interest marketing departments rather than development teams. The results of the survey panel could result in requests for rework. The Lyssana system can even supply business and consumer survey panel participants.

UsabilityHub is indeed a valuable usability testing tool that offers a range of testing methods to assess the user experience and usability of websites and applications. Its user-friendly interface, rapid results, participant recruitment options, and flexible and cost-effective pricing make it a strong choice for teams looking to prioritize user-centric design and improve the usability of their digital products. Whether you are a designer, developer, or product manager, UsabilityHub can help you gather actionable insights to enhance your software’s user experience.

11. Cypress

Cypress is a versatile and open-source software testing tool that has gained popularity for its capabilities in various testing domains, including integration testing, end-to-end testing (E2E), UI testing, API testing, CI/CD testing, and more. It stands out for its user-friendly API, real-time browser preview, and seamless integration with modern development workflows. Cypress runs on Windows, Linux, and macOS. Cypress app is open-source software released under the MIT License while the Cypress Cloud is a web application.

Key Features:

• Tests suitable for different stakeholder groups
• A free software package or a paid cloud platform
• Workload automation

Why do we recommend it?

Cypress is an end-to-end testing system. Perform unit testing and integration testing to spot coding errors and then acceptance testing to ensure that functionality matches requirements. Usability testing is the final part of the journey where marketers discover whether the technical delivery and the Web design are good enough to please buyers.

Cypress excels in integration testing by allowing you to test the interactions between different components, modules, or services within your web application. You can ensure that these components work together harmoniously, detecting issues that may arise when different parts of your application interact. E2E testing involves testing the entire application flow, from the user’s perspective. Cypress simplifies E2E testing by offering an easy-to-use API for simulating user interactions such as clicks, form submissions, and navigation.

Who is it recommended for?

This package is aimed at businesses that want to develop a website or mobile app for themselves or it can be integrated into a system development package by a development services provider or consultancy. The on-premises version of this package is free to use.

Cypress can also be used for API testing. You can make HTTP requests to test API endpoints and validate responses, ensuring that your backend services function as expected. Cypress integrates seamlessly with CI/CD pipelines, enabling you to automate your testing process. Its parallel test execution feature helps reduce test execution time, making it suitable for CI/CD environments.

Cypress’s ability to perform a wide range of testing, its developer-friendly approach, and its integration with modern development workflows make it a valuable tool for ensuring the quality and reliability of web applications.

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