Best Free Application Development Software - Page 35
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Compare the Top Free Application Development Software as of May 2026 - Page 35
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1
Puppeteer
Puppeteer
Most things that you can do manually in the browser can be done using Puppeteer! Puppeteer-core is intended to be a lightweight version of Puppeteer for launching an existing browser installation or for connecting to a remote one. Be sure that the version of puppeteer-core you install is compatible with the browser you intend to connect to. Puppeteer will be familiar to people using other browser testing frameworks. You create an instance of Browser, open pages, and then manipulate them with Puppeteer's API. By default, Puppeteer downloads and uses a specific version of Chromium so its API is guaranteed to work out of the box. To use Puppeteer with a different version of Chrome or Chromium, pass in the executable's path when creating a Browser instance.Starting Price: Free -
2
Playwright
Playwright
Playwright supports all modern rendering engines including Chromium, WebKit, and Firefox. Test on Windows, Linux, and macOS, locally or on CI, headless or headed. Playwright waits for elements to be actionable prior to performing actions. It also has a rich set of introspection events. The combination of the two eliminates the need for artificial timeouts - the primary cause of flaky tests. Playwright assertions are created specifically for the dynamic web. Checks are automatically retried until the necessary conditions are met. Configure test retry strategy, capture execution trace, videos, screenshots to eliminate flakes. Browsers run web content belonging to different origins in different processes. Playwright is aligned with the modern browsers architecture and runs tests out-of-process. This makes Playwright free of the typical in-process test runner limitations.Starting Price: Free -
3
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 -
4
Marionette
Marionette
Organize your app in terms of small Views. Marionette makes it easy to compose rich layouts out of small components. We've added tons of features from templateHelpers, to a declarative UI hash, that will keep you from ever wanting to go back. Share complex UI interactions across views. Behaviors are like mixins, without all of the pain associated with property collision. Decoupled communication between your application components with a powerful messaging system. Write classes with the same API as your views. Marionette Objects support features like extend, events, initialize, and more. Marionette community is home to the most welcoming and vibrant discussions in the Backbone ecosystem. Stop spending more time thinking about your framework than your app. Marionette will never get in the way of you and your code.Starting Price: Free -
5
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 -
6
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 -
7
MockK
MockK
Mocking is a technique to make testing code readable and maintainable. In three consequent articles, I would like to show the basics, features, and quirks of the MockK library. It is a new open-source library (github repository) focused on making mocking in Kotlin great. Injection first tries to match properties by name, then by class or superclass. Check the lookupType parameter for customization. Properties are injected even if private is applied. Constructors for injection are selected from the biggest number of arguments to lowest.Starting Price: Free -
8
OpenTest
OpenTest
OpenTest is a free and open source functional test automation framework for web applications, mobile apps and APIs, built for scalability and extensibility, with a focus on enabling the mainstream test automation practices. OpenTest is a feature-reach tool that requires little to no coding skills and can handle virtually any type of functional test automation project. Keywords are high-level building blocks which hide the complexity of the underlying technology and let you build concise, readable and maintainable tests. No coding skills required.Run multiple test sessions in parallel, limited only by the available hardware resources. When you've maxed out your local machine(s), spin up more test actors in the cloud(s). JavaScript code can be embedded organically anywhere within your keyword-driven test to cover complex test scenarios. Run a test multiple times, over a set of data records maintained in a separate data file.Starting Price: Free -
9
Robot Framework
Robot Framework
Robot Framework is a generic open-source automation framework. It can be used for test automation and robotic process automation (RPA). Robot Framework is supported by Robot Framework Foundation. Many industry-leading companies use the tool in their software development. Robot Framework is open and extensible. Robot Framework can be integrated with virtually any other tool to create powerful and flexible automation solutions. Robot Framework is free to use without licensing costs. Robot Framework has an easy syntax, utilizing human-readable keywords. Its capabilities can be extended by libraries implemented with Python, Java or many other programming languages. Robot Framework has a rich ecosystem around it, consisting of libraries and tools that are developed as separate projects.Starting Price: Free -
10
Karate
Karate
Karate is the only open-source tool to combine API test automation, mocks, performance-testing and even UI automation into a single, unified framework. The BDD syntax popularized by Cucumber is language-neutral and easy for even non-programmers. Assertions and HTML reports are built-in, and you can run tests in parallel for speed. There’s also a cross-platform stand-alone executable for teams not comfortable with Java. You don’t have to compile code. Just write tests in a simple, readable syntax - carefully designed for HTTP, JSON, GraphQL and XML. And you can mix API and UI test automation within the same test script. It is worth pointing out that JSON is a ‘first-class citizen’ of the syntax such that you can express payload and expected data without having to use double-quotes and without having to enclose JSON field names in quotes. There is no need to ‘escape’ characters like you would have had to in Java or other programming languages.Starting Price: Free -
11
EarlGrey
EarlGrey
With the EarlGrey framework, you have access to enhanced synchronization features. EarlGrey automatically synchronizes with the UI, network requests, and various queues; but still allows you to manually implement customized timings, if needed. EarlGrey’s synchronization features help to ensure that the UI is in a steady state before actions are performed. This greatly increases test stability and makes tests highly repeatable. EarlGrey works in conjunction with the XCTest framework and integrates with Xcode’s Test Navigator so you can run tests directly from Xcode or the command line (using xcodebuild). The EarlGrey documentation for users is located in the EarlGrey/docs folder. To get started, review the EarlGrey features, check for backward compatibility, and then install/run EarlGrey with your test target. After everything is configured, take a look at the EarlGrey API and start writing your own tests.Starting Price: Free -
12
Serenity BDD
Serenity BDD
Serenity BDD helps you write cleaner and more maintainable automated acceptance and regression tests faster. Serenity also uses the test results to produce illustrated, narrative reports that document and describe what your application does and how it works. Serenity tells you not only what tests have been executed, but more importantly, what requirements have been tested. One key advantage of using Serenity BDD is that you do not have to invest time in building and maintaining your own automation framework. The aim of Serenity is to make it easy to quickly write well-structured, maintainable automated acceptance criteria, using your favourite BDD or conventional testing library. You can work with Behaviour-Driven-Development tools like Cucumber or JBehave, or simply use JUnit. You can integrate with requirements stored in an external source (such as JIRA or any other test cases management tool), or just use a simple directory-based approach to organise your requirements.Starting Price: Free -
13
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 TestMu AI, 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 -
14
behave
behave
Behavior-driven development (or BDD) is an agile software development technique that encourages collaboration between developers, QA and non-technical or business participants in a software project. We have a page further describing this philosophy. Behavior-driven development (or BDD) is an agile software development technique that encourages collaboration between developers, QA and non-technical or business participants in a software project. It was originally named in 2003 by Dan North as a response to test-driven development (TDD), including acceptance test or customer test driven development practices as found in extreme programming. BDD is a second-generation, outside–in, pull-based, multiple-stakeholder, multiple-scale, high-automation, agile methodology. It describes a cycle of interactions with well-defined outputs, resulting in the delivery of working, tested software that matters.Starting Price: Free -
15
SpecFlow
SpecFlow
SpecFlow makes test automation easier by turning it into a team effort and allowing every role to better use their skills. Don’t waste your time searching for the correct definition across your binding classes, just right-click and jump to the relevant code. Hooks (event bindings) can be used to perform additional automation logic at specific times, such as any setup required prior to executing a scenario. SpecFlow supports a dependency injection framework that is able to instantiate and inject context for scenarios. This allows you to group the shared state in context classes, and inject them into every binding class that needs access to that shared state.Starting Price: Free -
16
Selenide
Selenide
You don't need to think how to shut down browser, handle timeouts and StaleElement Exceptions or search for relevant log lines, debugging your tests. We are proud to claim that Selenide is so simple that you don't need to read tons of documentation. Selenium WebDriver is a great tool, but it’s not a tool for testing. It’s a tool for browser manipulation. There are several testing libraries around Selenium WebDriver. But it seems that they do not resolve the main problems of UI tests. Namely, instability of tests caused by dynamic content, JavaScript, Ajax, timeouts etc. Selenide was created to resolve these problems. First of all, Selenide makes your tests stable by resolving (almost) all Ajax/timing issues. We are proud to claim that Selenide is so simple that you don't need to read tons of documentation. The whole work with Selenide consists of three simple things!Starting Price: Free -
17
Spock Framework
Spock
Spock is a testing and specification framework for Java and Groovy applications. What makes it stand out from the crowd is its beautiful and highly expressive specification language. Thanks to its JUnit runner, Spock is compatible with most IDEs, build tools, and continuous integration servers. Spock is inspired from JUnit, RSpec, jMock, Mockito, Groovy, Scala, Vulcans, and other fascinating life forms. Spock Web Console is a website that allows you to instantly view, edit, run, and even publish Spock specifications. It is the perfect place to toy around with Spock without making any commitments.Starting Price: Free -
18
Insignal
Insignal
Learn more about your users, Track your users' clicks, and scroll movement on your website. Take steps to improve, and convert them into customers using our easy tools. Not sure what made your user leave the site? Conversion Funnel will help you figure that out. Replay everything that a user does on your website and work towards making your product better. Records your users as they use your website. See every mouse movement, keypress, click and scroll movement. See wherein your users are searching and what part of the site they're interested in by visualizing their mouse and eye movements using machine learning. Helps you find out where and why your users are leaving your website. Track the smallest of details. Feature-rich real-time analytics to collect the smallest detail about the user. Collect feedback and understand your users with customizations like never before. Collect not just feedback but act on that feedback instantly to convert your viewers into paying customers.Starting Price: $14 per month -
19
Squeaky
Squeaky
Squeaky's future-proof analytics suite lets you capture up to 60% more data than legacy tools by putting customer privacy first. Use context-rich customer data and insights to make better decisions for your business. Analyze and segment your traffic to learn why visitors are converting and how you can help more to succeed. Provide faster, more effective customer support by seeing and hearing your customers' problems first-hand. Squeaky puts data at the heart of how you understand and improve your customer experience. There's no need to sift through hours of recording data, our advanced filtering helps you segment and surface only the most relevant customer recordings. Monitor performance and make informed decisions about your site, using precise and meaningful data. Capture round-the-clock NPS® and sentiment survey data and know your customers are being heard. Use heatmap data to provide the right content and the most effective interfaces for your users.Starting Price: $50 per month -
20
Delve AI
Delve AI
Learn how to create online shopper personas with behavioral analysis. Use these ecommerce customer personas to improve messaging, targeting and buyer experiences. Get practical tips to create and apply PPC personas for paid search advertising. Boost SEM performance by implementing buyer personas in your PPC campaigns. Online reviews are rich sources of the voice of the customer and hence very useful to build buyer personas. Learn how to use them strategically to create accurate buyer personas.Starting Price: $89 per month -
21
StepZen
StepZen
StepZen provides a unique low code approach to creating GraphQL APIs for any data source—REST, SQL, NoSQL, SOAP/XML, and GraphQL. With one command, you can specify your backend; StepZen introspects it and generates the schema for you. Then, with a few lines of code and powerful directives (@rest, @dbquery), you can quickly customize a schema—or write one from scratch. Another directive (@materializer) lets you stitch graphs together, seamlessly scaling GraphQL across teams and domains. In addition, by using @materializer, you avoid managing concerns across subgraphs, writing stubs of types, and other complexities. Whether you deploy a single graph or a federated graph-of-graphs, with one command, you deploy it to StepZen's highly available cloud. Automatic parallelized execution, security and control of your APIs and data, and performance and reliability optimizations are built-in. So we keep your GraphQL infrastructure secure and stable so you can focus on your business.Starting Price: Free -
22
RapidFort
RapidFort
Automatically eliminate unused software components and deploy smaller, faster, more secure workloads. RapidFort drastically reduces vulnerability and patch management queues so that developers can focus on building. By eliminating unused container components, RapidFort enhances production workload security and saves developers from unnecessarily patching and maintaining unused code. RapidFort profiles containers to understand what components are needed to run. Run your containers as normal in any environment, dev, test, or prod. Use any container deployment, including Kubernetes, Docker Compose, Amazon EKS, and AWS Fargate. RapidFort then identifies which packages you must keep, enabling you to remove unused packages. Typical improvements are in the 60% to 90% range. RapidFort also provides the option to build and customize remediation profiles, allowing you to pick and choose what to retain or remove.Starting Price: $5,000 per month -
23
Supernova
Supernova
Supernova manages the entire design system lifecycle in one place, without making your team change tools or maintain self-built workflows and integrations. Automate everything to fit the way you work already. Designers, developers, product owners, and stakeholders, everyone has their own tools, work styles, and something to contribute. Let them work the way they want to, using the tools they love. Documentation is the key to the broad adoption of your design system. Supernova gives you new power tools to create an unparalleled resource that teams can rally around. Create an additional layer of data on top of your Figma imports to enhance your design system, add descriptions, comments, custom properties, statuses, and more. Publish design system changes in Figma, your documentation updates, and pull requests open, automatically. Without any human intervention required, follow the rules you set.Starting Price: $25 per month -
24
Hope UI
Iqonic Design
As the name suggests, Hope UI is the revolutionary admin dashboard built with the developer's aspirations and needs in the first place. Hope UI Laravel Admin Dashboard Template and UI component set is designed with a modular component structure to help design and launch web applications in the fastest way possible. Being able to develop lightweight web applications and admin panels, Hope UI Admin Template comes with a Live Customizer to cut down on development time and coding hours. The Hope UI Bootstrap Admin Dashboard brings the future of admin UI to power your present and future development. Hope UI is available in 8 different technologies which are Bootstrap, Vue JS, React JS, Laravel, CodeIgniter, Figma, XD and Sketch UI Kit and more versions like Tailwind, Angular, React Native, etc are in the roadmap.Starting Price: $99 per year -
25
gopaddle
gopaddle
Unleash the power of the no-code platform for modern applications. Build, Provision, Run and Scale Cloud-Native Applications by leveraging your team's current capabilities. Unlock the potential of your applications, capture new revenue opportunities and exceed customer expectations by modernizing your legacy and greenfield applications rapidly. Be the first to market and lead the change. Leverage Out-of-the-box DevOps capabilities in the platform to simplify and automate your software delivery and maintenance. Spice up your 'cloud first' strategy with multi and hybrid cloud enablement. Avoid vendor lock-in and give the flexibility of choice to your teams to bring their own cloud and infrastructure. Eliminate manual errors due to human factors and save time to modernize applications. Debug and resolve issues faster than before using the built-in developer tools.Starting Price: $45 per month -
26
Kong Gateway
Kong
The world’s most popular API gateway. Built for hybrid and multi-cloud, optimized for microservices and distributed architectures. Get started today – download Kong Gateway for free. Kong Gateway supports hybrid or multi-cloud infrastructure, and includes a Kubernetes-native ingress solution and support for declarative configuration management. Kong Gateway is part of the Konnect managed connectivity platform. Konnect delivers connectivity functionality such as API Portals and AI-based anomaly detection, while providing the flexibility of running high performance connectivity runtimes. Use one of the many plugins developed by Kong or our community to add the functionality you need. Build your own plugin with our built in, well-documented plugin development kit. Configure Gateway natively using an API, web UI, or with declarative configuration to manage updates via your CI/CD pipelines.Starting Price: Free -
27
Jumpcut
Jumpcut
Jumpcut is a macOS clipboard manager that provides Mac users with quick, intuitive access to their clipboard history, with an interface that stays out of their way. It’s been around for over fifteen years, saving users time and preventing frustration whenever they need to use a phone number, URL, or code snippet that they had just a minute ago. It’s absolutely free and open source under the MIT License. Users upgrading from 0.63 have reported issues with the Accessibility tab of the “Security & Preferences” Preferences panel, which is required to make the paste functionality work.Starting Price: Free -
28
KonnectzIT
KonnectzIT
Choose the authorized applications from our integration library. Configure the actions and fields using flow builder to start the sync. Communication will start between the apps and KonnectzIT will take care from here. Is your day got munched by regular daily tasks that are simple but time-consuming? Can’t do other important work because you need to put your time & effort into these simple tasks? Looking for an easy but effective to save your time, money, and effort? Use our drag & drop visual builder and instantly connect the application to sync the data between them. It will save you a lot of hours in a day depending on the automation volume. The larger the connections, the larger the time spent daily. Connect the applications and automated unlimited tasks easily and simply using a visual connect builder. No matter how complex your workflow is, our builder will help you to visualize the automation setup while configuring the tasks.Starting Price: $10 per month -
29
Japedo
Logitags
Japedo analyses source code and database scheme and generates a complete documentation of the persistence layer of a Java application. The documentation as a dynamic HTML page includes tables, diagrams, mappings, version comparisons, it lists bugs, flaws and inconsistencies of the implementation and provides a sophisticated search functionality.Starting Price: €120/year -
30
Hypi
Hypi
Hypi is a no-code and low-code web and mobile app development platform. The platform is simple enough for a non-technical user to build and launch applications but its underlying API is flexible enough for developers to customise any aspect. Deliver solutions 10x faster and scale on demand. The product is used by small startups and global enterprises alike who can choose the convenient cloud option or simple on-premise deployment. Access pre-made templates and smart suggestions, all from the marketplace. Creating screens doesn't mean building every single one from scratch. Link screen designs to your user stories. It keeps you on track with your goals, in line with your user’s needs. Control the visual consistency without manually editing every screen. Your design system perfected the way you envision it. Extend the editor with personal or external widgets. Anything to make your job easier.Starting Price: £14.99 per month
