Best Application Development Software for vStellar

Docker takes away repetitive, mundane configuration tasks and is used throughout the development lifecycle for fast, easy and portable application development, desktop and cloud. Docker’s comprehensive end-to-end platform includes UIs, CLIs, APIs and security that are engineered to work together across the entire application delivery lifecycle. Get a head start on your coding by leveraging Docker images to efficiently develop your own unique applications on Windows and Mac. Create your multi-container application using Docker Compose. Integrate with your favorite tools throughout your development pipeline, Docker works with all development tools you use including VS Code, CircleCI and GitHub. Package applications as portable container images to run in any environment consistently from on-premises Kubernetes to AWS ECS, Azure ACI, Google GKE and more. Leverage Docker Trusted Content, including Docker Official Images and images from Docker Verified Publishers.

The collaboration platform for API development. Simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman. Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production. Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a backend server. Generate and publish beautiful, machine-readable documentation to make your API easier to consume. Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals. Provide a shared context for building and consuming APIs, and collaborate in real-time.

IntelliJ IDEA is a professional-grade integrated development environment (IDE) primarily designed for Java and Kotlin development. It helps developers write code faster by automating routine tasks and providing smart coding assistance. The IDE supports the full software development lifecycle, from design and coding to testing and deployment. IntelliJ IDEA stays up to date with the latest language features, such as full support for Java 24 and Kotlin K2 mode. It offers a smooth and enjoyable workflow that helps developers stay focused and productive. The platform also emphasizes data privacy and security, complying with industry standards like SOC 2.

GitHub is the world’s most secure, most scalable, and most loved developer platform. Join millions of developers and businesses building the software that powers the world. Build with the world’s most innovative communities, backed by our best tools, support, and services. If you manage multiple contributors , there’s a free option: GitHub Team for Open Source. We also run GitHub Sponsors, where we help fund your work. The Pack is back. We’ve partnered up to give students and teachers free access to the best developer tools—for the school year and beyond. Work for a government-recognized nonprofit, association, or 501(c)(3)? Get a discounted Organization account on us.

Bitbucket is more than just Git code management. Bitbucket gives teams one place to plan projects, collaborate on code, test, and deploy. Free for small teams under 5 and priced to scale with Standard ($3/user/mo) or Premium ($6/user/mo) plans. Keep your projects organized by creating Bitbucket branches right from Jira issues or Trello cards. Build, test and deploy with integrated CI/CD. Benefit from configuration as code and fast feedback loops. Approve code review more efficiently with pull requests. Create a merge checklist with designated approvers and hold discussions right in the source code with inline comments. Bitbucket Pipelines with Deployments lets you build, test and deploy with integrated CI/CD. Benefit from configuration as code and fast feedback loops. Know your code is secure in the Cloud with IP whitelisting and required 2-step verification. Restrict access to certain users, and control their actions with branch permissions and merge checks for quality code.

The Java™ Programming Language is a general-purpose, concurrent, strongly typed, class-based object-oriented language. It is normally compiled to the bytecode instruction set and binary format defined in the Java Virtual Machine Specification. In the Java programming language, all source code is first written in plain text files ending with the .java extension. Those source files are then compiled into .class files by the javac compiler. A .class file does not contain code that is native to your processor; it instead contains bytecodes — the machine language of the Java Virtual Machine1 (Java VM). The java launcher tool then runs your application with an instance of the Java Virtual Machine.

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.

Gatling is a high-performance load testing platform built to help modern teams uncover bottlenecks before they impact users. It enables organizations to simulate massive, real-world traffic so they can validate reliability across web apps, APIs, cloud infrastructure, and even AI workloads. With powerful dashboards and trend analysis, Gatling provides instant visibility into performance issues and long-term patterns. The platform centralizes test creation, execution, and reporting, ensuring teams standardize their approach across all environments. DevOps and engineering teams can embed Gatling directly into CI/CD pipelines to automate performance checks at every stage. Designed for scalability and efficiency, Gatling empowers companies to ship confidently—even during peak traffic events.

Next-gen software quality management platform brings together automated and manual testing. Level up your product quality control and boost your QA and development team productivity by setting your TestOps. We appreciate the development and QA teams use numerous processes, frameworks, and tools to enable software delivery. That’s why we came up with Allure TestOps – a quality management platform solution that seamlessly integrates with any of your frameworks and keeps all your testing data transparent and centralised. Allure TestOps links both manual and automated testing empowering your team’s productivity. Reinforce and speed up your CI/CD pipeline and get instant insights into your test coverage. Allow Allure TestOps to update your test documentation based on test run results tracking and analysis and get no more excuses for outdated test cases.