Alternatives to Storybook
Compare Storybook alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Storybook in 2025. Compare features, ratings, user reviews, pricing, and more from Storybook competitors and alternatives in order to make an informed decision for your business.
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1
Gearset
Gearset
Gearset is the complete, enterprise-ready Salesforce DevOps platform, enabling teams to implement best practices across the entire DevOps lifecycle. With powerful solutions for metadata and CPQ deployments, CI/CD, testing, code scanning, sandbox seeding, backups, archiving, observability, and Org Intelligence — including the Gearset Agent — Gearset gives teams complete visibility, control, and confidence in every release. More than 3,000 enterprises, including McKesson, IBM and Zurich, trust Gearset to deliver securely at scale. Combining advanced governance, built‑in audit trails, SOX/ISO/HIPAA support, parallel pipelines, integrated security scans, and compliance with ISO 27001, SOC 2, GDPR, CCPA/CPRA, and HIPAA, Gearset provides enterprise‑grade controls, rapid onboarding, and a user‑friendly interface — all in one platform. Gearset delivers enterprise‑grade power without the overhead, which is why leading global organizations in finance, healthcare, and technology choose us, -
2
Sahi Pro
Tyto Software Pvt Ltd
Sahi Pro is a no-code test automation tool for web, desktop, mobile, and SAP applications. Sahi Pro empowers business testers and automation engineers to streamline their test automation processes. Sahi Pro reduces the time, effort, and complexity involved in test automation, making it an ideal choice for various domains including automobile, healthcare and BFSI. Features: 1. Non-flaky Test Execution - For reliable test results and reduced time wastage in analysis of false-positives or false-negatives. 2. Supports Multiple Technologies - Achieve end to end automation across technologies. 3. No-code Automation - Enable non-technical business testers to automate. 4. Integrations - Integrate and work with your existing ecosystem. Testers using Sahi Pro easily automate complex tests without writing code. With Sahi Pro, you can achieve faster release cycles, improved software quality, & reduced costs. Our customers love Sahi Pro for its speed, flexibility, and ease of use.Starting Price: $1499/year/user -
3
Testsigma
Testsigma
Testsigma is a low-code end-to-end software testing platform that works out of the box. It's built to enable modern Product teams to collaboratively plan, develop, execute, analyze, debug, and report on their automated testing—for websites, native Android and iOS apps, and APIs. Testsigma test scripts are code-agnostic. While the platform itself is built with Java, you can write test scripts in simple English or use the Test Recorder to generate airtight test scripts for websites and native mobile apps. You can also use the test recorder on your own device farm/grid or on Testsigma's built-in device lab on the cloud. The platform has built-in visual testing, parametrized or data-driven testing, 2FA testing, and more advanced features for easy test automation. Our AI automatically fixes unstable elements and test steps, identifies and isolates regression-affected scripts, and provides suggestions to help you find and fix test failures. -
4
aqua cloud
aqua cloud GmbH
aqua is an AI-powered advanced Test Management System designed to make the QA process painless. It is ideal for enterprises and SMBs across various sectors, although aqua was initially designed specifically for regulated industries like Fintech, MedTech and GovTech. aqua cloud helps to: - Organize custom testing processes and workflows, - Run testing scenarios of any complexity and scale, - Create extended sets of test data, - Ensure thorough insights with rich reporting capabilities and - Go from manual to automated testing smoothly. Additionally, it includes a unique feature called “Capture," which transforms the process of documenting and reproducing bugs into a 1-click action. aqua integrates with all the most popular issue trackers and automation tools like JIRA, Selenium, Jenkins and others. REST API is also available. aqua's streamlines testing and saves your QA team up to 70% of time, enabling you to deliver high-quality software and releases x2 faster! -
5
Qodo
Qodo
Qodo (formerly Codium) analyzes your code and generates meaningful tests to catch bugs before you ship. Qodo maps your code’s behaviors, surfaces edge cases, and tags anything that looks suspicious. Then, it generates clear and meaningful unit tests that match how your code behaves. Get full visibility of how your code behaves, and how the changes you make affect the rest of your code. Code coverage is broken. Meaningful tests actually check functionality, giving you the confidence needed to commit. Spend fewer hours writing questionable test cases, and more time developing useful features for your users. By analyzing your code, docstring, and comments, Qodo suggests tests as you type. All you have to do is add them to your suite. Qodo is focused on code integrity: generating tests that help you understand how your code behaves; finding edge cases and suspicious behaviors; and making your code more robust.">
Starting Price: $19/user/month -
6
BrowserStack
BrowserStack
BrowserStack is the world’s largest cloud platform for software testing, with 19 global data centers & 20,000+ real Android and iOS devices that power nearly 1 Billion tests a year. BrowserStack's end-to-end unified testing platform is focused on supporting all genres of testing & operations, from functional testing to visual testing, accessibility testing, performance testing, test observability, API testing, and more. Over 50,000 customers, including Amazon, Paypal, Well Fargo Bank, Nvidia, MongoDB, Pfizer, GE, Discovery, React JS, Apache, JQuery and several others rely on BrowserStack to test their web & mobile apps.Starting Price: $29/month/user -
7
Docz
Docz
Starting from v2, Docz is entirely built using GatsbyJS. It's optimised for a lightning fast development experience and speedy build times. This also allows you to leverage GatsbyJS's huge ecosystem of plugins and tools. No need to worry about complex configuration settings to build and run your documentation. With Docz you can create customizable sites with a single command. Using component shadowing you can create your own theme or customize the provided theme to make your documentation website stand out. MDX is Markdown + JSX, it brings the world of components to Markdown. MDX makes it possible to import and use your components in Markdown-style files. Docz fully leverages this, and provides many built-in components that augment and speed up your documentation workflow. Plugins provide a great way to add functionality to your application without changing your code. -
8
Bit
Bit.dev
Bit is a scalable and collaborative way to build and reuse components. It's everything you need from local development to cross-project integrations. Try it for free. Bit is an open-source toolchain for component-driven development. Forget monolithic apps and distribute to composable software. Distribute component ownership across development teams. Components are easy to replace and refactor over time. Drive development standards and consistency across teams and products. Compose existing components into new ones instead of reinventing the wheel. Build a composable design system and UI. Create a consistent and reusable UI software. Distribute code and teams. Drive autonomy and standards. Scale to cross-team collaboration and bridge the gap between design, development and product. Create a scalable and composable backend that never repeats itself. -
9
Zeroheight
zeroheight
zeroheight helps teams create, manage and maintain their design systems. Using zeroheight, designers, engineers, and product teams can collaborate and build design systems that can be easily shared across teams. Create a centralized repository of styles, tokens, guidelines, code, components, and patterns, integrated and synced between the tools you already use. zeroheight makes maintaining consistency across different products easier and reduces the time and effort needed to stand up new brands and products confidently. We offer features that suit teams from startup to enterprise, from governance to analytics to automation.Starting Price: Free -
10
Hugo
Hugo
The world’s fastest framework for building websites. Hugo is one of the most popular open-source static site generators. With its amazing speed and flexibility, Hugo makes building websites fun again. Hugo is the fastest tool of its kind. At <1 ms per page, the average site builds in less than a second. Hugo supports unlimited content types, taxonomies, menus, dynamic API-driven content, and more, all without plugins. We love the beautiful simplicity of markdown’s syntax, but there are times when we want more flexibility. Hugo shortcodes allow for both beauty and flexibility. Hugo ships with pre-made templates to make quick work of SEO, commenting, analytics and other functions. One line of code, and you're done. Hugo provides full i18n support for multi-language sites with the same straightforward development experience Hugo users love in single-language sites. Hugo allows you to output your content in multiple formats, including JSON or AMP, and makes it easy to create your own. -
11
Knapsack
Knapsack
Knapsack is a digital production platform that connects design and code into a real-time system of record, enabling enterprise teams to build, govern, and deliver digital products at scale. It offers dynamic documentation that automatically updates when code changes occur, ensuring that documentation remains current and reducing maintenance overhead. Knapsack's design tokens and theming capabilities allow for the connection of brand decisions to style implementation in product UIs, ensuring a cohesive brand experience across portfolios. Knapsack's component and pattern management provides a birds-eye view of components across design, code, and documentation, ensuring consistency and alignment as systems scale. Its prototyping and composition features enable teams to use production-ready components to prototype and share UIs, allowing for exploration, validation, and testing with code that ships. Knapsack also offers permissions and controls to meet the complex workflow. -
12
Chromatic
Chromatic
Chromatic takes pixel-perfect snapshots of real code, styling, and assets. Your tests reflect what your users actually experience. Chromatic creates tests from the Storybook stories already created during the development process. No need to write the same tests twice. Our custom detection algorithm eliminates flakiness from latency, animations, resource loading, and browser state. Chromatic provides a unified workspace for designers, product managers, and other stakeholders to share feedback and sign-off on UI. Post comments and change requests right beside your live components, so that everyone can follow decision-making. Automatically assign specific stakeholders to review open pull requests to speed up sign-off. -
13
Percy
Percy
Percy is an all-in-one visual testing and review platform that automates visual quality assurance by capturing screenshots of your web, mobile, or component UI, comparing each snapshot against a baseline, and highlighting any unintended visual changes to ensure pixel-perfect consistency. The platform supports integration with popular test frameworks, CI/CD pipelines, and component libraries, enabling teams to capture snapshots at each commit, review diff overlays, approve changes, suppress noise from dynamic elements, and maintain stable visual approval workflows. Percy works across multiple resolutions, browsers, devices, and viewports, and offers features like cross-browser testing, full-page capture, branch-aware baseline selection, intelligent diff filtering, and built-in collaboration tools (approve, request changes, comment). With support for SDKs in major languages and frameworks (e.g., Playwright, Cypress, Storybook), teams can embed Percy into their existing test suites. -
14
UXPin
UXPin
Speed up your product development process with revolutionary Merge technology. From UI designers to UI developers – create consistent interfaces using the same building blocks. Build prototypes that feel like the end product. Get creative with our design tool or start with hundreds of built-in UI elements. Integrate with Storybook , Git repo, or NPM package and use code components straight from your design system, app or website. Design with the exact same UI code components that devs build the product with. No coding skills required – just drag and drop the elements. Design inclusive products in line with WCAG standards. Test your prototypes with built-in features like Contrast Checker and Color Blindness Simulator. With States, Variables, Conditional Interactions and Auto Layout, your prototypes will perfectly mimic the end product experience, during usability testing.Starting Price: $19 per month -
15
MoQuality
MoQuality
MoQuality is a sandbox that enables end-to-end UI testing for your Android and iOS apps. Helps build robust Appium tests. No more flaky tests. Integrates with your continuous testing workflow. Stores all test artifacts (tests, builds and reports) under one dashboard. Generates visual test reports to assist with triaging and test maintenance. Enables advanced functionality over Appium open-source. Write your Appium tests in Python, Java, JavaScript (wd/webdriverio). Build and debug your Appium script on the fly with MoQuality. Run the tests locally on real devices, emulators, and simulators. Test reports are the results of test runs that are saved by the user. You can run your Appium tests locally as many times as you wish. MoQuality supports most Android and iOS real devices, emulators and simulators. We do not restrict the number of users per license. Go ahead and add all your teammates to share the test reports.Starting Price: $25 per month -
16
Mockplus
Jongde Software
Mockplus is an all-in-one design & collaboration platform for prototyping, collaboration, and design systems. Integrations are Adobe XD, PS, Axure, Sketch Interactive prototyping Quickly turn ideas into functional prototypes with components, icons, and interactions. Streamline design and validation process without a single line of code. Painless collaboration Create a more connected product design workflow. Bring designers, product managers, and front-end developers to work better and together. Scalable design system Build available, dynamic and reusable design systems. Establish consistency and predictability across the team. Easy to manage, maintain, share and iterate. Get access to pre-designed components and icons | Create and reuse design assets and interactions to streamline your design process. Create interactions, such as Page Link, Components Interaction and Interaction State using drag-and-drop.Starting Price: $129.00/year/user -
17
XCTest
Apple
Create and run unit tests, performance tests, and UI tests for your Xcode project. Use the XCTest framework to write unit tests for your Xcode projects that integrate seamlessly with Xcode's testing workflow. Tests assert that certain conditions are satisfied during code execution, and record test failures (with optional messages) if those conditions aren’t satisfied. Tests can also measure the performance of blocks of code to check for performance regressions and can interact with an application's UI to validate user interaction flows. A test method is a small, self-contained method that tests a specific part of your code. A test case is a group of related test methods. Add test cases and test methods to a test target to confirm that your code performs as expected. The primary class for defining test cases, test methods, and performance tests. An abstract base class for creating, managing, and executing tests.Starting Price: Free -
18
unittest
Python
The unittest unit testing framework was originally inspired by JUnit and has a similar flavor as major unit testing frameworks in other languages. It supports test automation, sharing of setup and shutdown code for tests, aggregation of tests into collections, and independence of the tests from the reporting framework. A test fixture represents the preparation needed to perform one or more tests, and any associated cleanup actions. This may involve, for example, creating temporary or proxy databases, directories, or starting a server process. A test suite is a collection of test cases, test suites, or both. It is used to aggregate tests that should be executed together. A test runner is a component which orchestrates the execution of tests and provides the outcome to the user. The runner may use a graphical interface, a textual interface, or return a special value to indicate the results of executing the tests.Starting Price: Free -
19
WebDriverIO
WebDriverIO
WebdriverIO allows you to automate any application written with modern web frameworks such as React, Angular, Polymeror Vue.js as well as native mobile applications for Android and iOS. WebdriverIO not only runs automation based on the WebDriver protocol, it also leverages native browser APIs to enable integrations to popular developer tools such as Chrome DevTools orGoogle Lighthouse. With the plugin you have access to commands for validating if you app is a valid PWA application as well as to commands for capturing frontend performance metrics such as speedIndex and others. The WebdriverIO testrunner comes with a command line interface that provides a nice configuration utility that helps you to create your config file in less than a minute. It also gives an overview of all available 3rd party packages like framework adaptions, reporter and services and installs them for you! -
20
Jest
Jest
Jest aims to work out of the box, config free, on most JavaScript projects. Make tests which keep track of large objects with ease. Snapshots live either alongside your tests, or embedded inline. Tests are parallelized by running them in their own processes to maximize performance. Tests are parallelized by running them in their own processes to maximize performance. By ensuring your tests have unique global state, Jest can reliably run tests in parallel. To make things quick, Jest runs previously failed tests first and re-organizes runs based on how long test files take. By ensuring your tests have unique global state, Jest can reliably run tests in parallel. To make things quick, Jest runs previously failed tests first and re-organizes runs based on how long test files take. Jest uses a custom resolver for imports in your tests, making it simple to mock any object outside of your test’s scope. -
21
pytest
pytest
pytest helps you write better programs. The pytest framework makes it easy to write small tests, yet scales to support complex functional testing for applications and libraries. Due to pytest’s detailed assertion introspection, only plain assert statements are used. Detailed info on failing assert statements. Auto-discovery of test modules and functions. Modular fixtures for managing small or parametrized long-lived test resources. Can run unittest (including trial) and nose test suites out of the box. Supports Python 3.6+ and PyPy 3. Rich plugin architecture, with over 315+ external plugins and thriving community. The maintainers of pytest and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. -
22
EasyMock
EasyMock
Most parts of a software system do not work in isolation, but collaborate with other parts to get their job done. In a lot of cases, we do not care about using real collaborators implementation in unit testing, as we trust these collaborators. Mock objects replace collaborators of the unit under test. To test a unit in isolation or mount a sufficient environment, we have to simulate the collaborators in the test. A Mock Object is a test-oriented replacement for a collaborator. It is configured to simulate the object that it replaces in a simple way. In contrast to a stub, a Mock Object also verifies whether it is used as expected. EasyMock has been the first dynamic Mock Object generator, relieving users of hand-writing Mock Objects, or generating code for them. EasyMock provides Mock Objects by generating them on the fly using Java proxy mechanism. -
23
Catch2
Catch2
Catch2 is mainly a unit testing framework for C++, but it also provides basic micro-benchmarking features and simple BDD macros. Catch2's main advantage is that using it is both simple and natural. Test names do not have to be valid identifiers, assertions look like normal C++ boolean expressions, and sections provide a nice and local way to share set-up and tear-down code in tests. You are on the devel branch, where the v3 version is being developed. v3 brings a bunch of significant changes, the big one being that Catch2 is no longer a single-header library. Catch2 now behaves as a normal library, with multiple headers and separately compiled implementation. Quick and easy to get started. Just download two files, add them to your project and you're away. No external dependencies. As long as you can compile C++14 and have the C++ standard library available. Write test cases as, self-registering, functions (or methods, if you prefer).Starting Price: Free -
24
Komodo Edit
ActiveState
Komodo Edit is a great editor if you’re looking for something powerful, yet simple. Komodo IDE provides more robust functionality such as debugging, unit testing, code refactoring and code profiling. Software vendors are increasingly the front line of security for their customers since one compromised patch or upgrade can make hundreds or even thousands of your customers susceptible to cyberattacks. Don’t be the next SolarWinds. Rather than implementing multiple point solutions and custom code, the ActiveState Platform can provide you with an out-of-the-box solution that helps ensure the security and integrity of the open source components you import, work with and run.Starting Price: $84 per month -
25
PowerMock
PowerMock
Writing unit tests can be hard and sometimes good design has to be sacrificed for the sole purpose of testability. Often testability corresponds to good design, but this is not always the case. For example final classes and methods cannot be used, private methods sometimes need to be protected or unnecessarily moved to a collaborator, static methods should be avoided completely and so on simply because of the limitations of existing frameworks. PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities. PowerMock uses a custom classloader and bytecode manipulation to enable mocking of static methods, constructors, final classes and methods, private methods, removal of static initializers and more. By using a custom classloader no changes need to be done to the IDE or continuous integration servers which simplifies adoption.Starting Price: Free -
26
testRigor
testRigor
testRigor is a feature specification engine designed to allow anyone on your team to build, maintain and understand tests created and executed in plain English. We provide a Chrome plugin to speed-up test creation, and our AI-powered system dramatically reduces test maintenance to a bare minimum and autonomously generates tests that reflect your end users’ behavior. -
27
Quash
Quash
Quash is an AI-powered quality assurance platform designed to streamline mobile testing by automatically generating and executing functional and visual tests without traditional scripting. It maps every screen in your mobile app, transforms product requirement documents into test cases, and executes them using an AI engine that understands app flows and user intent, eliminating brittle selectors and fragile test scripts. The platform learns your application context by ingesting app data and adapts in real time, achieving significantly higher coverage and smoother releases by catching edge cases early. After test executions, Quash provides detailed bug reports that include screenshots, session logs, root-cause insights, and suggested fixes, all delivered via a unified dashboard for test-generation, execution, bug-tracking, and analytics. It also supports end-to-end integrations into existing CI/CD pipelines, test-management workflows, and bug-reporting tools.Starting Price: Free -
28
Informatica Test Data Management
Informatica
We help you discover, create, and subset test data; visualize test data coverage; and protect data so you can focus on development. Automate provisioning of masked, subsetted, and synthetically generated data to meet development and testing needs. Identify sensitive data locations quickly with consistent masking in and across databases. Store, augment, share, and reuse test datasets to improve testers’ efficiency. Provision smaller data sets to minimize infrastructure requirements and speed performance. Use our comprehensive set of masking techniques to consistently protect data across applications. Support packaged applications to ensure solution integrity and speed deployments. Engage risk, compliance, and audit teams to align with data governance initiatives. Improve test efficiency with reliable, trusted production data sets; reduce server and storage footprints with data set sizes targeted for each team. -
29
Katalon Studio
Katalon
An all-in-one test automation solution Get started in no time, scale up with no limit, for any team, at any level. Katalon Studio Robust test generation on all platforms Productive IDE to generate automated tests easily for all platforms and OSs, regardless of application complexity. Powerful recording utility for effortlessly storing all UI elements to maximize reusability. Codeless experience for beginners. Infinite testing extension for experts. Set Up Projects Built-in project templates Start immediately with ready-made templates, test case libraries, keywords, and object repositories. All kinds of end-to-end testing in one place Uniquely perform web, mobile, API, and desktop testing – all in a single project. -
30
Rainforest QA
Rainforest QA
No-code test automation for modern software teams. Rainforest QA makes it easy for developers and product managers to quickly automate and maintain end-to-end tests within any CI/CD pipeline. Create your first test in five minutes or less. Product builders should have control over product quality. With Rainforest, anyone on your team can write, run, and maintain automated UI tests and triage test results – without any code. Use our API, CLI, or one of our direct integrations with popular CI tools. No need to provision and configure multiple tools – Rainforest’s got everything you need to get started right away.Starting Price: $200.00/month -
31
Alyvix
Würth Phoenix
Build end-user bots visually interacting with any Windows application like ERPs or your favourite browser. Run and measure business-critical workflows like a human would, but continuously. Measure end-user experiences: Alyvix records the click-to-appearance responsiveness of each transaction. Report IT service quality to support technical and business actions. Visually define end-user workflows: Alyvix Editor lets you build test cases in a visual way, interaction after interaction. Run visual test cases that interact with a machine just as a real user would: Alyvix uses mouse and keyboard like a person. Measure transaction time click-to-appearance: Alyvix measures how long each transaction takes to complete after the last interaction. -
32
Galen Framework
Galen Framework
Layout testing seemed always a complex task. Galen Framework offers a simple solution: test location of objects relatively to each other on page. Using a special syntax and comprehensive rules you can describe any layout you can imagine. Galen Framework runs well in Selenium Grid. You can set up your tests to run in a cloud like LambdaTest, or Sauce Labs, or BrowserStack so that you can even test your responsive websites on different mobile devices. Galen can run multiple tests in parallel which is also a nice time saver. Galen Framework is designed with responsiveness in mind. It is easy to set up a test for different browser sizes. Galen just opens a browser, resizes it to a defined size and then tests the page according to specifications. Using Galen Specs Language you are able to describe any complex layout including different screen sizes or browsers. It's not only easy to write, it is also easy to read it if you are unfamiliar with the language.Starting Price: Free -
33
Reflect
Reflect
Reflect makes regression tests easy to create and painless to maintain. High growth teams use Reflect to catch bugs without slowing down development velocity. Writing end-to-end tests shouldn't be a time-consuming process. Instead of creating tests in a code editor, with Reflect the browser is the interface. Creating a test is as simple as entering a URL and using your web app. Reflect records your actions and turns them into a repeatable test that you can run as often as you'd like. No installation required. With other website automation software, visual regressions (i.e. bugs in the UI that don't modify the functionality of the site) cannot be detected. That's because most automation tools operate at a level below how users interact with your application.Starting Price: $100 per month -
34
Morpholio Journal
Morpholio
Never lose an idea again. Whether you sketch daily or occasionally, inspiration strikes us all at the most unexpected moments. Journal allows you to effortlessly record, organize, sketch and brainstorm ideas along with photos, images or text to capture and develop your most important thoughts. With a powerful array of high quality drawing and writing tools including pens, pencils and paint, Morpholio Journal is ideal for designers, architects, photographers, artists, travelers, or members of any creative culture. Its unique book interface affords instant and easy navigation of thousands of pages unlocking infinite potential. Finally, you can keep track of everything you encounter, and find new ways to visualize, test, and explore the world around you. -
35
UnitWise
API Swan
Our platform intelligently understands your code, seamlessly executing edge cases within your coding environment, ensuring the prompt delivery of impeccable software. Experience accelerated delivery of flawless software with UnitWise at your fingertips. Say goodbye to the tedious process of manually creating test cases and the reliance on prompts for generating test codes. As you delve into coding, UnitWise becomes your steadfast testing companion, providing real-time and pertinent test codes to streamline your development journey. Select the class to test and generate test cases within your IDE in a single click. View the failed test case behaviors and fix the test to eliminate errors. Identify code bugs, enhancing software reliability, while seamlessly correcting identified code issues. We prioritize data security, ensuring the steadfast integrity and exclusivity of your code are meticulously upheld.Starting Price: $65 per month -
36
Selenium
Software Freedom Conservancy
Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should) also be automated as well. If you want to create robust, browser-based regression automation suites and tests, scale and distribute scripts across many environments, then you want to use Selenium WebDriver, a collection of language specific bindings to drive a browser - the way it is meant to be driven. If you want to create quick bug reproduction scripts, create scripts to aid in automation-aided exploratory testing, then you want to use Selenium IDE; a Chrome and Firefox add-on that will do simple record-and-playback of interactions with the browser. If you want to scale by distributing and running tests on several machines and manage multiple environments from a central point. -
37
Embunit
Embunit
Embunit is a unit testing tool for programmers and testers developing software in C or C++. It is aimed at embedded software development, but can be used to create unit tests for any software written in C or C++. Embunit eliminates the mundane, repetitive aspects of writing unit tests, leaving you free to concentrate on defining the test behaviour. This is achieved by specifying a sequence of actions as shown in the example screenshot below. Embunit generates the unit test source code automatically. Embunit has been developed with flexibility in mind, and can be customised to create unit tests for virtually any hardware platform; even the smallest microcontrollers. It is not tied to any specific toolset and is designed to accommodate the common limitations of embedded C++ compilers.Starting Price: $131.19 per user -
38
Karma
Karma
The main goal for Karma is to bring a productive testing environment to developers. The environment being one where they don't have to set up loads of configurations, but rather a place where developers can just write the code and get instant feedback from their tests. Because getting quick feedback is what makes you productive and creative. Test your code on real browsers and real devices such as phones, tablets or on a headless PhantomJS instance. Control the whole workflow from the command line or your IDE - just save a file and Karma will run all the tests. Karma also watches all the files, specified within the configuration file, and whenever any file changes, it triggers the test run by sending a signal to the testing server to inform all of the captured browsers to run the test code again. Each browser then loads the source files inside an IFrame, executes the tests and reports the results back to the server.Starting Price: Free -
39
JMockit
JMockit
The toolkit is provided as a set of artifacts deployed to the Maven Central repository. It requires Java 7 or newer for test execution; tests must use JUnit or TestNG. For instructions on how to add the library to a Java project, see Running tests with JMockit. In this tutorial we examine the APIs available in the library, with the help of example tests (using Java 8). The central API - a single annotation - provides support for the automatic instantiation and initialization of the objects to be tested. Then we have the mocking API (also known as the "Expectations" API), intended for tests which use mocked dependencies. Finally, there is a small faking API (aka the "Mockups" API), which can be used for the creation and application of fake implementations that avoid the full cost of external components.Starting Price: Free -
40
CodeBeaver
CodeBeaver
CodeBeaver writes and updates your unit tests. Not only that! It highlights bugs in your Pull Requests by running tests and checking out your code. It works natively with GitHub, GitLab and Bitbucket. The onboarding takes 2 clicks! We currently help 30k GitHub stars and counting.Starting Price: $12/month -
41
Early
EarlyAI
Early is an AI-driven tool designed to automate the generation and maintenance of unit tests, enhancing code quality and accelerating development processes. By integrating with Visual Studio Code (VSCode), Early enables developers to produce verified and validated unit tests directly from their codebase, covering a wide range of scenarios, including happy paths and edge cases. This approach not only increases code coverage but also helps identify potential issues early in the development cycle. Early supports TypeScript, JavaScript, and Python languages, and is compatible with testing frameworks such as Jest and Mocha. The tool offers a seamless experience by allowing users to quickly access and refine generated tests to meet specific requirements. By automating the testing process, Early aims to reduce the impact of bugs, prevent code regressions, and boost development velocity, ultimately leading to the release of higher-quality software products.Starting Price: $19 per month -
42
Diffblue Cover
Diffblue
Diffblue Cover analyzes your existing Java program and writes unit regression tests that reflect the current behavior of the code. The CLI tool works 100% autonomously, configuring itself from your Maven or Gradle environment. By bringing automation to the test-writing process, the CLI tool provides a speed boost for organizations that are working towards achieving DevOps goals like CI/CD. Since it fits into a CI pipeline, the CLI tool protects the whole codebase from regressions by shifting testing left. Diffblue Cover's unit regression tests run fast and verify new code changes immediately, helping users detect undesirable changes in the code’s behavior as early as possible, when they're the quickest, easiest, and cheapest to fix. And tests are automatically maintained, saving teams even more time.Starting Price: Free -
43
BaseRock AI
BaseRock AI
BaseRock.ai is an AI-driven software quality platform that automates unit and integration testing, enabling developers to generate and execute tests directly within their preferred IDEs. It leverages advanced machine learning models to analyze codebases, producing comprehensive test cases that ensure optimal code coverage and quality. By integrating seamlessly into CI/CD pipelines, BaseRock.ai facilitates early bug detection, reducing QA costs by up to 80% and boosting developer productivity by 40%. Its features include automated test generation, real-time feedback, and support for multiple programming languages such as Java, JavaScript, TypeScript, Kotlin, Python, and Go. BaseRock.ai offers flexible pricing plans, including a free tier, to accommodate various development needs. It is trusted by leading enterprises to enhance software quality and accelerate feature delivery.Starting Price: $14.99 per month -
44
Nightwatch.js
Nightwatch.js
Nightwatch.js is an integrated, easy to use End-to-End testing solution for web applications and websites, written in Node.js. It uses the W3C WebDriver API to drive browsers and perform commands and assertions on DOM elements. Simple but powerful syntax which enables you to write tests very quickly, using Javascript (Node.js) and CSS or Xpath selectors. Typescript is supported as well. Built-in command-line test runner which runs the tests either sequentially or in parallel, with retries and implicit waits. Also supports grouping of test suites and tags. Manages automatically Selenium or WebDriver services (ChromeDriver, GeckoDriver, Edge, Safari) in a separate child process. Fluent and easy to work with Page Object Model support to better organise elements and sections, with support for both CSS or Xpath selectors.Starting Price: Free -
45
TestBench for IBM i
Original Software
Testing and test data management for IBM i, IBM iSeries, AS/400. Complex IBM i applications must be checked from top to bottom, right into the data, wherever it is. TestBench IBM i is a comprehensive, proven test data management, verification and unit testing solution that integrates with other solutions for total application quality. Stop copying the entire live database and hone in on the data you really need. Select or sample data with full referential integrity preserved. Simply decide which fields need to be protected and use a variety of obfuscation methods to protect your data. Track every insert, update and delete including intervening data states. Create rules so that data failures are flagged to you automatically. Avoid the painful save/restores and stop attempting to explain bad test results based on poor initial data. Comparing outputs is a well proven method to verify your test results but it can be laborious and prone to error. This unique solution can save hours.Starting Price: $1,200 per user per year -
46
Cypress
Cypress.io
Fast, easy and reliable end-to-end testing for anything that runs in a browser. Cypress has been made specifically for developers and QA engineers, to help them get more done. Cypress benefits from our amazing open-source community - and our tools are evolving better and faster than if we worked on them alone. Cypress is based on a completely new architecture. No more Selenium. Lots more power. Cypress takes snapshots as your tests run. Simply hover over commands in the Command Log to see exactly what happened at each step. Stop guessing why your tests are failing. Debug directly from familiar tools like Chrome DevTools. Our readable errors and stack traces make debugging lightning fast. Cypress automatically reloads whenever you make changes to your tests. See commands execute in real-time in your app. Never add waits or sleeps to your tests. Cypress automatically waits for commands and assertions before moving on. No more async hell.Starting Price: Free -
47
Typemock
Typemock
The easiest way to unit test. Write tests without changing your code! Even legacy code. Static methods, private methods, non-virtual methods, out parameters and even members and fields. Our professional edition is free for developers around the world. We also have paid support package. Improve your code integrity and deliver quality code. Fake entire object models with a single statement. Mock statics, private, constructors, events, linq, ref args, live, future, static constructors. Our suggest feature creates automated test suggestions suitable for your code. Our smart runner will run only your impact tests and get you super fast feedback. Our coverage feature displays your code coverage in your editor while you code.Starting Price: $479 per license per year -
48
AgitarOne
Agitar Technologies
The AgitarOne product family helps you work safer, better, and smarter as you develop and maintain your Java applications. AgitarOne JUnit Generator creates thorough JUnit tests on your code. This helps you find regressions and makes it safer and easier to improve your code to reduce the cost to maintain it. AgitarOne Agitator helps developers understand the behavior of their code as they write it. This helps you prevent bugs and prevent code complexity that can become tomorrow's maintenance headache. The AgitarOne family is the best available way to create, use, and manage the unit tests that you need to be truly agile. Automated JUnit Generation, you can automate the generation of JUnit tests to create a "safety net" before you start working with existing code. You can automate the generation of JUnit tests to create a "safety net" before you start working with existing code. -
49
Mockito
Mockito
Mockito is a mocking framework that tastes really good. It lets you write beautiful tests with a clean & simple API. Mockito doesn’t give you hangover because the tests are very readable and they produce clean verification errors. Read more about features & motivations. Top 10 Java library across all libraries, not only the testing tools. In late 2013 there was an analysis made of 30.000 GitHub projects. Although Mockito reached number 9 in the main report, mockito-core and mockito-all are the same tool and therefore the factual position of Mockito is number 4, surpassing famous tools like Guava or Spring. Treat this study as an indicator of a big impact that Mockito makes every day on unit tests written in Java.Starting Price: Free -
50
GitAuto
GitAuto
GitAuto is an AI-powered coding agent that integrates with GitHub (and optional Jira) to read backlog tickets or issues, analyze your repository’s file tree and code, then autonomously generate and review pull requests, typically within three minutes per ticket. It can handle bug fixes, feature requests, and test coverage improvements. You trigger it via issue labels or dashboard selections, it writes code or unit tests, opens a PR, runs GitHub Actions, and automatically fixes failing tests until they pass. GitAuto supports ten programming languages (e.g., Python, Go, Rust, Java), is free for basic usage, and offers paid tiers for higher PR volumes and enterprise features. It follows a zero data‑retention policy; your code is processed via OpenAI but not stored. Designed to accelerate delivery by enabling teams to clear technical debt and backlogs without extensive engineering resources, GitAuto acts like an AI backend engineer that drafts, tests, and iterates.Starting Price: $100 per month