Best Unit Testing Software with a Free Trial of 2025

Parasoft's mission is to provide automated testing solutions and expertise that empower organizations to expedite delivery of safe and reliable software. A powerful unified C and C++ test automation solution for static analysis, unit testing and structural code coverage, Parasoft C/C++test helps satisfy compliance with industry functional safety and security requirements for embedded software systems.

aqua, with its AI-powered technology, is a cutting-edge Test Management System built to streamline and boost QA processes. Perfect for both large and small businesses, especially in highly regulated sectors like Fintech, MedTech, and GovTech, aqua excels in: - Organizing and managing custom testing workflows - Handling various testing scales and complexities, - Managing comprehensive test data sets - Ensuring detailed insights through advanced reporting - Transitioning from manual to automated testing All of this becomes effortless with Aqua. Additionaly, it stands out with "Capture" - simplified 'single-click' bug tracking and reproducing solution. Seamlessly integrating with popular platforms like JIRA, Selenium, and Jenkins, and supported by REST API, aqua enhances QA efficiency, significantly reducing time spent on routine tasks and accelerating software release cycles by 200%. Take away your pain of testing! Try aqua today!

Visual Studio is a robust and feature-packed IDE designed for developers working primarily on Windows with .NET and C++. It provides an extensive toolset that includes code completion, project scaffolding, debugging, and performance optimization, all aimed at boosting productivity. Developers can use AI-powered tools like GitHub Copilot to autocomplete entire functions, generate unit tests, and automate repetitive tasks. Visual Studio’s agent mode enables intelligent workflows that refactor, build, and test code automatically, scaling best practices across teams. The IDE also offers deep diagnostics such as interactive debugging consoles and inline fixers to identify and resolve bugs early. Visual Studio supports collaboration by enabling real-time code sharing and review. It is highly customizable with thousands of available extensions to tailor the development experience. Whether building desktop, mobile, web, or cloud applications, Visual Studio provides a seamless environment to deliver clean, testable code efficiently.

Diffblue Cover analyzes Java programs and creates unit regression tests that accurately reflect the current behavior. The CLI tool is 100% self-configuring and can be used in your Gradle or Maven environment. The CLI tool automates the test-writing process and provides a speed boost to organizations working towards achieving DevOps goals such as CI/CD. The CLI tool fits in a CI pipeline and protects the entire codebase from regressions by shifting testing to the left. Diffblue Cover's unit tests for regression are fast and verify any code changes immediately. This allows users to detect unwanted changes in code behavior as soon as possible. Teams can save even more time by having tests automatically maintained.

All members of the team can perform robust automated testing on desktop, mobile, and web applications. This is regardless of whether they have any experience with functional test automation tools. Ranorex Studio is an all in one solution that provides codeless automation tools and a complete IDE. Ranorex Studio's industry-leading object recognition system and shareable object repository make it possible to automate GUI testing, regardless of whether you are using legacy applications or the latest mobile and web technologies. Ranorex Studio supports cross browser testing with integrated Selenium WebDriver integration. Easy data-driven testing can be done using CSV files, Excel spreadsheets, or SQL database files. Ranorex Studio supports keyword-driven testing. Our tools for collaboration enable test automation engineers to create reusable code modules, and share them with their team. Get a 30-day free trial to get started with automation testing.

Gearset is a full‑featured Salesforce DevOps solution built for the enterprise, giving teams the tools to adopt best practices across every stage of the DevOps lifecycle. From metadata and CPQ deployments to CI/CD, testing, code analysis, sandbox seeding, backups, archiving, and observability, Gearset gives teams unmatched insight and control over their Salesforce workflows. Over 3,000 organizations — including names like McKesson and IBM — rely on Gearset to deliver with security and scale in mind. With advanced governance, detailed audit trails, SOX/ISO/HIPAA support, multi‑team pipelines, integrated security checks, and adherence to ISO 27001, SOC 2, GDPR, CCPA/CPRA, and HIPAA, Gearset combines enterprise‑ready compliance with rapid onboarding and an intuitive interface — all in one platform. Leading firms in finance, healthcare, and tech trust Gearset to power their DevOps initiatives without adding complexity.

Testing and managing test data for IBM i, IBM iSeries, and AS/400 systems requires thorough validation of complex applications, extending down to the underlying data. TestBench for IBM i offers a robust and reliable solution for test data management, verification, and unit testing, seamlessly integrating with other tools to ensure overall application quality. Instead of duplicating the entire live database, you can focus on the specific data that is essential for your testing needs. By selecting or sampling data while maintaining complete referential integrity, you can streamline the testing process. You can easily identify which fields require protection and employ various obfuscation techniques to safeguard your data effectively. Additionally, you can monitor every insert, update, and delete action, including the intermediate states of the data. Setting up automatic alerts for data failures through customizable rules can significantly reduce manual oversight. This approach eliminates the tedious save and restore processes and helps clarify any inconsistencies in test results that stem from inadequate initial data. While comparing outputs is a reliable way to validate test results, it often involves considerable effort and is susceptible to mistakes; however, this innovative solution can significantly reduce the time spent on testing, making the entire process more efficient. With TestBench, you can enhance your testing accuracy and save valuable resources.

Embunit serves as a unit testing framework tailored for developers and testers working with C or C++, particularly in the realm of embedded software. Although primarily intended for embedded systems, it can effectively facilitate the creation of unit tests across various software applications written in C or C++. By automating the repetitive tasks associated with writing unit tests, Embunit allows users to focus on defining the desired test behavior. This is accomplished by outlining a series of actions, as illustrated in the accompanying example screenshot. The tool automatically generates the source code for unit tests, which enhances efficiency. Designed with adaptability in mind, Embunit can be customized to generate unit tests for nearly any hardware platform, including even the smallest microcontrollers. It operates independently of any specific toolset and is crafted to meet the typical constraints faced by embedded C++ compilers, ensuring broad compatibility and utility. Ultimately, Embunit streamlines the testing process, making it more accessible for developers across various projects.

Unit testing made simple: You can write tests without modifying your existing code, including legacy systems. This applies to static methods, private methods, non-virtual methods, out parameters, and even class members and fields. Our professional edition is available at no cost for developers globally, alongside options for paid support packages. By enhancing your code integrity, you can consistently produce high-quality code. You can create entire object models with just a single command, enabling you to mock static methods, private methods, constructors, events, LINQ queries, reference arguments, and more, whether they are live or future elements. The automated test suggestion feature tailors recommendations specifically for your code, while our intelligent test runner efficiently executes only the tests that are impacted, providing you with rapid feedback. Additionally, our coverage tool allows you to visualize your code coverage directly in your editor as you develop, ensuring that you keep track of your testing progress. This comprehensive approach not only saves time but also significantly enhances the reliability of your software.

JustMock simplifies the process of isolating your testing environment, enabling you to concentrate on the specific logic you wish to assess. It integrates effortlessly with your preferred unit testing framework, streamlining both unit testing and mocking to be quick and straightforward. You can mock a wide array of components, including non-virtual methods, sealed classes, static methods and classes, as well as non-public members and types across the board, including those in MsCorLib. It serves as an ideal solution for unit testing your .NET applications, regardless of whether you are working with intricate legacy systems or code crafted with best practices in mind. The JustMock Debug Window is particularly useful for troubleshooting, as it provides insights into the arguments used when calling mock objects, as well as identifying potential issues like why a mock isn't invoked or is invoked multiple times. Furthermore, JustMock gives you essential feedback regarding the thoroughness and completeness of your unit tests, making it an indispensable tool for organizations aiming to maintain high standards in code quality. By leveraging its capabilities, teams can enhance their testing strategies and ensure more reliable software development outcomes.

dbForge Unit Tests for SQL Server is a graphical user interface (GUI) tool, available as an add-in for SQL Server Management Studio (SSMS). Built on the tSQLt framework, it allows developers to write unit tests in T-SQL within the familiar SSMS interface. Key Features: - Isolated Unit Testing: Avoid affecting the actual database. - Simultaneous Testing: Perform multiple unit tests simultaneously. - DevOps Integration: Integrate unit tests into DevOps processes. - Command Line Execution: Run unit tests via the command line. - T-SQL-based: Write unit tests in T-SQL without additional tools. - tSQLt Framework Management: Easily install and uninstall the tSQLt framework for writing unit tests. - Example Collection: Access a collection of unit test examples for quick standard task performance. - Safe Refactoring: Ensure safe refactoring in large databases. The tool includes a Test List Manager, a tab within the SSMS interface meant for creating, editing, managing, and running unit tests. This integration allows teams to work entirely within SSMS, eliminating the need to learn and switch between different tools, thus fostering a more comfortable environment and efficient performance.

Refraction serves as a powerful code-generation tool tailored for developers, employing AI to assist in writing code. This innovative platform enables users to produce unit tests, documentation, refactor existing code, and much more. It supports code generation in 34 programming languages, including Assembly, C#, C++, CoffeeScript, CSS, Dart, Elixir, Erlang, Go, GraphQL, Groovy, Haskell, HTML, Java, JavaScript, Kotlin, LaTeX, Less, Lua, MatLab, Objective-C, OCaml, Perl, PHP, Python, R Lang, Ruby, Rust, Sass/SCSS, Scala, Shell, SQL, Swift, and TypeScript. With Refraction, thousands of developers globally are streamlining their workflows, utilizing AI to automate tasks such as documentation creation, unit testing, and code refactoring. This tool not only enhances efficiency but also allows programmers to concentrate on more critical aspects of software development. By leveraging AI, you can refactor, optimize, fix, and style-check your code effortlessly. Additionally, it facilitates the generation of unit tests compatible with various testing frameworks and helps clarify the intent of your code, making it more accessible for others. Embrace the capabilities of Refraction and transform your coding experience today.

Confident AI has developed an open-source tool named DeepEval, designed to help engineers assess or "unit test" the outputs of their LLM applications. Additionally, Confident AI's commercial service facilitates the logging and sharing of evaluation results within organizations, consolidates datasets utilized for assessments, assists in troubleshooting unsatisfactory evaluation findings, and supports the execution of evaluations in a production environment throughout the lifespan of LLM applications. Moreover, we provide over ten predefined metrics for engineers to easily implement and utilize. This comprehensive approach ensures that organizations can maintain high standards in the performance of their LLM applications.

Elevate the quality of your software applications without compromising on speed or flexibility by utilizing an intuitive GUI test automation solution. Our advanced AI-driven object recognition technology, combined with both script-based and scriptless options, provides an unparalleled experience for testing desktop, web, and mobile applications seamlessly. TestComplete features a smart object repository and accommodates over 500 controls, ensuring that your GUI tests remain scalable, resilient, and easy to update. By enhancing automation in quality assurance, you can achieve a higher standard of overall quality. You can also automate UI testing for a diverse array of desktop applications, such as .Net, Java, WPF, and Windows 10. Develop reusable tests applicable to all web applications, including contemporary JavaScript frameworks like React and Angular, across more than 2050 browser and platform configurations. Additionally, you can create and automate functional UI tests on both physical and virtual iOS and Android devices, all without the need to jailbreak your phone, making the process even more user-friendly. This comprehensive approach guarantees that your applications are not only tested thoroughly but also maintained effectively as they evolve.

The AgitarOne product suite empowers you to enhance safety, efficiency, and intelligence in the development and upkeep of your Java applications. The AgitarOne JUnit Generator produces comprehensive JUnit tests for your code, which aids in identifying regressions and streamlines the process of improving your code while minimizing maintenance costs. Additionally, AgitarOne Agitator assists developers in grasping their code's behavior during the writing phase, effectively helping to avoid bugs and reduce code complexity that could lead to future maintenance challenges. The AgitarOne family stands out as the premier solution for creating, utilizing, and managing the unit tests essential for achieving true agility in development. With its automated JUnit generation feature, you can establish a protective "safety net" before you begin modifying existing code, ensuring greater reliability and stability in your projects. This proactive approach not only saves time but also fosters a more confident coding environment.

Pytest is an invaluable tool for enhancing your programming skills, as it simplifies the creation of both basic tests and complicated functional tests for various applications and libraries. The framework’s ability to provide detailed assertion introspection means you can rely solely on standard assert statements for all your testing needs. It offers thorough information regarding failed assertions, automatically identifies test modules and functions, and features modular fixtures that help manage both small and parameterized long-lived test resources effectively. Additionally, pytest can seamlessly execute unittest (including trial) and nose test suites, and it is compatible with Python versions 3.6 and above, as well as PyPy 3. Its rich plugin architecture boasts over 315 external plugins and is backed by a vibrant community of users. Furthermore, the maintainers of pytest, along with thousands of other packages, have partnered with Tidelift to provide commercial support and maintenance for the open-source dependencies integral to your projects. By leveraging pytest, you can save valuable time, minimize risks, and enhance the overall health of your codebase, all while ensuring that the developers of the specific dependencies you rely on are compensated for their work. This commitment to community and support truly sets pytest apart as a leader in the testing framework landscape.

This allows for parallel collaborative development to reduce rework, visualize, reduce conflict, and lower team risk. It also improves team velocity and throughput. It preserves the integrity of baseline configurations, simplifies rollback, recovery, streamlines approval, and keeps integrity when automating builds or deployments. It is much easier to identify issues early in the lifecycle. CM allows issues can be identified as soon a code commit is made via Pulse. All actions drive shift left: CI build, unit testing and code review. Integration with developer friendly repositories, IDEs (such git, IntelliJ Eclipse, Microsoft.net), detailed auditing, logging, immutable versioning, and history Reduces preparation time and effort for regulatory compliance and audits with a comprehensive audit trail and tamperproof history.

Experience the power of CodeRush features immediately and witness their incredible capabilities. With robust support for C#, Visual Basic, and XAML, it offers the fastest .NET testing runner available, state-of-the-art debugging, and an unparalleled coding experience. Effortlessly locate symbols and files within your project and swiftly navigate to relevant code elements based on the current context. CodeRush boasts Quick Navigation and Quick File Navigation functionalities, streamlining the process of finding symbols and accessing files. Additionally, the Analyze Code Coverage feature enables you to identify which sections of your solution are safeguarded by unit tests, highlighting areas that may be vulnerable within your application. The Code Coverage window provides a detailed view of the percentage of statements covered by unit tests across each namespace, type, and member in your solution, empowering you to enhance your code quality effectively. By utilizing these features, you can significantly elevate your development workflow and ensure better application reliability.

The LDRA tool suite stands as the premier platform offered by LDRA, providing a versatile and adaptable framework for integrating quality into software development from the initial requirements phase all the way through to deployment. This suite encompasses a broad range of functionalities, which include requirements traceability, management of tests, adherence to coding standards, evaluation of code quality, analysis of code coverage, and both data-flow and control-flow assessments, along with unit, integration, and target testing, as well as support for certification and regulatory compliance. The primary components of this suite are offered in multiple configurations to meet various software development demands. Additionally, a wide array of supplementary features is available to customize the solution for any specific project. At the core of the suite, LDRA Testbed paired with TBvision offers a robust combination of static and dynamic analysis capabilities, along with a visualization tool that simplifies the process of understanding and navigating the intricacies of standards compliance, quality metrics, and analyses of code coverage. This comprehensive toolset not only enhances software quality but also streamlines the development process for teams aiming for excellence in their projects.

Appsurify utilizes its patented AI technology to identify the segments of an application that have been altered following each developer commit, enabling it to automatically select and run only the tests pertinent to those modifications within the CI Pipeline. By narrowing down to a targeted set of tests influenced by each developer's changes, Appsurify enhances the optimization of CI Pipelines, eliminating the delays caused by automated testing and allowing Builds to operate more swiftly and effectively. The traditional approach to Automation Testing and CI Pipelines often hampers productivity due to prolonged completion times, which results in delayed feedback for bug detection and pushes release schedules further down the line. With Appsurify, the collaboration between QA and DevOps is made more efficient, as it facilitates focused test execution in critical areas, ensuring that bugs are identified early and that CI/CD pipelines maintain a smooth and efficient flow. This innovation leads to a more agile development process, ultimately contributing to a faster and more reliable software delivery cycle.

Cantata is an integration and unit testing tool that allows developers to verify code that is compliant with the standard on embedded and host-native target platforms. Cantata automates test framework generation and execution to help accelerate compliance with dynamic testing requirements. Results diagnostics and report generation. Cantata integrates with a wide range of embedded development tools, including compilers and static analysis tools, to build and requirements management tools, and more. Cantata is easy to use thanks to the ECLIPSE®, tight tool integrations, and tests written in C/C++. SGS-TUV SAAR GmbH has independently certified Cantata for the main software safety standards. The standard Cantata tool certification kits come free of charge. They include everything you need out-of-the box and comprehensive guidance to help achieve certification for your device software.

Ensure that your executable specifications align with your code across any contemporary development framework. Cucumber Open, boasting over 40 million downloads, stands as the leading automation tool for Behavior-Driven Development globally. Not only is Cucumber Open open source, but it also functions as an adaptable platform that integrates effortlessly with the tools you already utilize and prefer. It is compatible with various languages, including Java, JavaScript, Ruby, and .NET, among others. You can organize plain text specifications right next to your code within your own source control system. Articulate the expected behavior of the system in a manner that is accessible to all stakeholders. Automate processes using Selenium, API requests, or direct function calls within the same execution context. Produce reports in formats such as HTML and JSON, or even create custom reporting solutions. Cucumber Open allows for integration with CucumberStudio, JIRA, or the development of your own plugins. It serves as a bridge between business teams and developers through the principles of BDD. By implementing test automation, you can significantly reduce the need for rework. Additionally, gain immediate insights through dynamic documentation that evolves with your project. It also offers seamless compatibility with Git for version control, making collaboration a breeze. This versatility not only enhances productivity but also fosters better communication among teams.

CodeBeaver not only creates and revises your unit tests but also identifies bugs in your Pull Requests by executing tests and analyzing your code. Furthermore, it seamlessly integrates with GitHub, GitLab, and Bitbucket. The setup process is incredibly simple, requiring just two clicks! At present, we support 30,000 GitHub stars and the number continues to rise. Join the growing community and enhance your coding efficiency today!