Page 4 | Best Application Development Software for Java

Ona

Ona, formerly Gitpod, is a modern development platform that provides mission control for software projects and engineering agents. It allows developers to keep momentum on any device by offering sandboxed, API-first environments in the cloud or within a company’s VPC. These environments come pre-configured with tools, dependencies, and controls, ensuring a consistent and secure setup for professional software engineering. Ona Agents further enhance productivity by assisting with tasks like scoping, writing, reviewing, and documenting code across the entire development lifecycle. Enterprise-ready guardrails deliver fine-grained permissions, policies, and audit trails, giving organizations full control over compliance and security. Trusted by millions of developers and Fortune 500 companies, Ona integrates seamlessly with tools like GitHub, GitLab, AWS, Copilot, and Amazon Bedrock.

Starting Price: $20/month

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CodeSandbox

CodeSandbox is a cloud development platform that empowers development teams to code, collaborate, and ship projects of any size from any device in record time. Run your code in powerful microVMs and build anything without limits. We configure your environment for you and keep your code always ready, behind a URL. Boxy, the CodeSandbox AI coding assistant, is also now available to all Pro subscribers.

Starting Price: $12 per month

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Glitch

Glitch is a collaborative programming environment that lives in your browser and deploys code as you type. Use Glitch to build anything from a good ol’ static webpage to full-stack Node apps. You never have to start from scratch: Just start remixing an existing starter app, or clone a project from services like GitHub and GitLab to experiment and deploy on Glitch. Build off the most popular JavaScript frameworks. Your favorite companies use Glitch to share apps that get you up and running with their APIs. Invite friends to work with you on public or private projects. Anyone with a browser can jump in and pick up where you left off, and private .env files keep secrets like API keys, well, secret. There's no deployment setup—as soon as you create a new project, your Glitch app is live with its own URL (or your custom domain!). Share or embed anywhere, and invite anyone to check out your code or remix it.

Starting Price: $8 per month

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Espresso

The web editor for Mac is back. For people who make delightful, innovative and fast websites — in an app to match. Espresso helps you write, code, design, build and publish with flair and efficiency. Sophisticated text features, amazing Live Preview with Browser Xray, CSSEdit tools, the Navigator, Dynamo auto-building, and Server Sync. Whether you're starting from scratch or tweaking a live site, Espresso has you covered. Change CSS for live sites and see your design update in real-time. No need to publish, reload or even save. Only Espresso makes playing with live projects this fun, easy and non-destructive. The new Espresso lets you build first-class standard CSS, but also modular SCSS and LESS. Styling is a joy with the beautiful navigator, auto-building by Dynamo and incredible integration with live preview and overrides.

Starting Price: $99

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Merico

Old analytics measure surface level signals. Merico directly analyzes the code, measuring what matters with deep program analysis. Engineering performance is challenging to measure. Few companies try, most that do use inaccurate and misleading signals, while missing hidden opportunities for recognition, improvement, and advancement. Until now, analytics and evaluation tools have focused on superficial metrics to assess quality and productivity. Developers know this isn't the right way. This is why we built Merico. With commit-level analysis, your team get the insights they need directly from the codebase. With Merico the information is immune to the inaccuracies that can be generated from measuring processes. With a direct relationship to the code, developers can improve, prioritize, and evolve with specifity. With Merico, teams can create clear shared goals, while tracking progress, productivity, and quality with practical benchmarks.

Starting Price: $2.50 per month

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Textastic

Textastic for Mac is the perfect desktop companion to the popular iOS code editor. With support for more than 80 source code and markup languages, Textastic brings the powerful syntax coloring engine of the iOS source code editor to the Mac. You can use your own TextMate, and Sublime Text, compatible syntax definitions. Textastic for Mac is based on the code editor that powers the iOS app. It uses native macOS APIs like Core Text for maximum speed. Code completion, file navigation with the symbol list and support for modern Mac features like Auto Save and Versions make your life easier. With iCloud Drive, you can sync your files across your macOS and iOS devices with ease. The app packs in support for 80 source code and markup languages, iCloud auto-save and macOS Versions. Built with the ability to import syntax definitions, themes and templates from TextMate.

Starting Price: $7.99 one-time payment

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TextPad

When just getting the job done is work enough, the last thing you need is to waste time having to learn yet another computer application. Your experience with other tools should be relevant to each new application, making it possible to sit down and use that new application right away. That is why TextPad is so popular. Whether you simply need a powerful replacement for Notepad, a tool for editing your web pages, or a programming IDE, TextPad does what you want, the way you would expect. It is available from our website to try before you buy basis, so please download your trial copy now, and find out just how productive you can be. TextPad is designed to provide the power and functionality to satisfy the most demanding text editing requirements. It can edit files up to the limits of virtual memory, and it will work with the 32-bit and 64-bit editions of Windows 11, 10, 8.1, 7, and Server 2008 to 2019.

Starting Price: $16.50 one-time payment

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WildEdit

TextPad

If you ever need to make the same changes to many files at once, then WildEdit will save you a lot of time. It is an interactive tool for users to edit a set of plain text files in a folder hierarchy, filtered by wildcards. This makes it ideal for editing web pages and software source code or reformatting log files and newsletters. It is not suitable for editing files with proprietary binary formats, such as Microsoft Word documents. You simply need to specify the search text, optionally using a regular expression, the replacement text, and a wildcard filter, then let it run. This process can be repeated as often as is required, and up to the last 10 changes can be undone and redone. WildEdit is available as a trial version before you buy it, so please download your trial copy now, and find out just how productive you can be. You can edit any files containing plain text.

Starting Price: $8.50 one-time payment

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phase 5

A classic among German HTML editors! Some features of the HTML editor are project management, TAG completion for HTML commands, syntax coloring to improve readability, HTML forms, integrated image viewer, syntax debugger, umlaut conversion, indentation assistant, project-wide replacement of text, user-defined menus and templates, supports common formats such as PHP, Javascript, HTML, VBScript, JAVA, Pearl, file manager to quickly switch between your documents, edit several documents at the same time, table assistant and much more. Free use only for home users and schools. Schools, in the sense of the licensing regulation, are institutions that prepare for vocational training. Companies, registered associations, and authorities must acquire a license in order to be able to work legally with the program. phase 5 runs without problems under both the 32-bit and the 64-bit version of Windows 10.

Starting Price: €47.60 one-time payment

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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

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Sumocode

Sumo Apps

Create apps and games with just a few lines of code. Learn how to code with gamified examples. Remix example of sample code or write something new from scratch. Inspired by examples, using JavaScript as a language you'll discover how easy it is to program and create games with few lines of code. Boost your creativity with Sumocode, and let your mind build new things! Update your skills and learn how to code like a pro! There's no holding back your imagination! Learn to apply engineering concepts to create digital solutions to problems at hand! It doesn't matter if you're 5, 55, or 105, you can learn to code! Sumocode is here to help you navigate the first steps on your journey to becoming a programmer. It is easier than you think. Learn to build apps and code snippets. It is surprisingly easy with our Sumo3D code library. You can use our examples as the base or create your own apps from scratch.

Starting Price: $9 per month

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UEStudio

UltraEdit

UEStudio is built upon the world's best text editor, UltraEdit, and delivers additional features for teams and developers – like deep Git integration. You can clone, checkout, update, commit, push/pull, and more directly from within UEStudio to manage your Git repositories. As a Git editor, UEStudio combines the world's best text editor and the power of Git all within a single application. Edit and update your source files, then commit them with the stroke of a hotkey or the click of a mouse. You can easily merge branches in UEStudio's Git branch manager (or in the Git shell if that's your style). Quickly review and resolve them with UltraCompare's merge tool support so you can be on your way. UEStudio parses your project and source files to provide you with intelligent, automatic source code completion.

Starting Price: $89.95 per year

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SmartBear AQTime Pro

SmartBear

Debugging should be simple. AQTime Pro synthesizes complex memory and performance information into digestible, actionable insights so you can quickly find bugs and their root cause. Finding and squashing highly differentiated bugs is tedious and complicated, but AQTime Pro makes it easy. With over a dozen profilers, you can find memory leaks, performance bottlenecks, code coverage gaps and more in just a few clicks. AQTime Pro enables you to squash all bugs with one tool and get back to making high quality code. Don’t let code profilers box you in with a single codebase or framework and prevent you from finding performance bottlenecks, memory leaks, code coverage gaps unique to your project. AQTime Pro is the one tool to use across multiple codebases and frameworks in a project. It has broad language support for C/C++, Delphi, .NET, Java and more.

Starting Price: $719 one-time payment

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Stickler CI

Stickler

Align your team's code reviews with automatic style feedback, for all the languages you use, all in one place. Connecting your repository is a couple of clicks away and our reviews finish in record time. Use the default style guides or customize each tool to fit your team's tastes. Use auto fixing to correct your team's style errors so you can focus on feedback. Stickler CI only keeps your code on our servers for the duration of a review. After the comments for a review are posted your code is removed from our servers. Incrementally improve and standardize the quality of your code in each pull request. Ensure your coding standards are applied consistently as code changes without having to disrupt your team. Make sure your code quality and style are standardized by automatically applying style and quality checking tools. Either use the defaults or customize linters to fit your existing coding standards.

Starting Price: $15 per month

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Material Design

Material is an adaptable system of guidelines, components, and tools that support the best practices of user interface design. Backed by open-source code, Material streamlines collaboration between designers and developers, and helps teams quickly build beautiful products. Material Design is inspired by the physical world and its textures, including how they reflect light and cast shadows. Material surfaces reimagine the mediums of paper and ink. Material Design is guided by print design methods — typography, grids, space, scale, color, and imagery — to create hierarchy, meaning, and focus that immerse viewers in the experience. Motion focuses attention and maintains continuity through subtle feedback and coherent transitions. As elements appear on screen, they transform and reorganize the environment with interactions generating new transformations.

Starting Price: Free

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Go

Golang

With a strong ecosystem of tools and APIs on major cloud providers, it is easier than ever to build services with Go. With popular open source packages and a robust standard library, use Go to create fast and elegant CLIs. With enhanced memory performance and support for several IDEs, Go powers fast and scalable web applications. With fast build times, lean syntax, an automatic formatter and doc generator, Go is built to support both DevOps and SRE. Everything there is to know about Go. Get started on a new project or brush up for your existing Go code. An interactive introduction to Go in three sections. Each section concludes with a few exercises so you can practice what you've learned. The Playground allows anyone with a web browser to write Go code that we immediately compile, link, and run on our servers.

Starting Price: Free

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JPedal

IDR Solutions

JPedal is a versatile Java PDF Library for displaying, converting, printing, and parsing PDFs in Java applications. With over 20 years of development, it supports a wide range of PDF files. Key features include: -PDF to Image Conversion: Converts PDFs to images in various formats. -Java Swing PDF Viewer: Offers multi-page display, search, printing, and annotation editing. -Text and Image Extraction: High-quality extraction of text and images from PDFs. -PDF Search: Supports searching with wildcards and regular expressions. -Form & Annotation Handling: Supports XFA and AcroForms, enabling form data access and annotation editing. -Document Manipulation: Allows deleting, merging, splitting, and optimizing PDFs. -Security & Performance: Runs locally without third-party dependencies, processing PDFs up to 3x faster than alternatives.

Starting Price: $950 one time fee

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Apache ServiceComb

ServiceComb

Open-source, full-stack microservice solution. With out-of-the-box, high performance, compatible with popular ecology, and multi-language support. Service contract guarantee based on OpenAPI. One-click scaffolding, out of the box, speeds up the building of microservice applications. The ecological extension supports multiple development languages such as Java/Golang/PHP/NodeJS. Apache ServiceComb is an open-source solution for microservices. It consists of multiple components that can be flexibly adapted to different scenarios through the combination of components. This guide can help you get started quickly with Apache ServiceComb, which is the best place to start trying for first-time users. To decouple the programming and communication models, so that a programming model can be combined with any communication models as needed. Application developers only need to focus on APIs during development and can flexibly switch communication models during deployment.

Starting Price: Free

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Axon Framework

AxonIQ

Purpose-built and open source, Axon Framework provides the building blocks for modern applications using event-driven architecture (EDA) powered by domain-driven design (DDD), event sourcing, and command query responsibility separation (CQRS). Our proven technology allows your team to evolve your application to reach business demands without unnecessary complexity.

Starting Price: FREE

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Best Application Development Software for Java - Page 4

Compare the Top Application Development Software that integrates with Java as of October 2025 - Page 4