Microsoft Build of OpenJDK Alternatives (September 2025)

SapMachine : The OpenJDK release maintained and supported by SAP

Get the world's best supported build of OpenJDK with Azul. See how Azul Platform Core can help you deliver secure & stable Java with 90% lower licensing costs.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

OpenFOAM is the leading free, open source software for computational fluid dynamics (CFD), owned by the OpenFOAM Foundation and distributed exclusively open source under the General Public...

.NET is a free, cross-platform, open-source developer platform. .NET has languages, editors, and libraries to build for web, mobile, desktop, games, and IoT.

Download the Java including the latest version 17 LTS on the Java SE Platform. These downloads can be used for any purpose, at no cost, under the Java SE binary code license.

libGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS.

An open source Java EE 8-compliant application server that lets you build Java applications once and deploy them everywhere.

NCache is an extremely fast and scalable Open Source In-Memory Distributed Cache for .NET and Java that caches app data and stores Web Sessions in multi-server environments.

ej-technologies offers best-in-class Java development tools: JProfiler is the industry-leading Java profiler, install4j is the most comprehensive Java installer builder

Visual Studio Code is a code editor redefined and optimized for building and debugging modern web and cloud applications.  Visual Studio Code is free and available on your favorite platform - Linux, macOS, and Windows.

Experience Java like never before with Azul Platform Prime. Turbocharge Java performance with a JVM that starts fast and stays fast, with less infrastructure.

Open-Source, Full-Stack Microservice Solution.With out of the box, high performance, compatible with popular ecology, multi-language support Get started

Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with no-cost long-term support. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard.

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps.

An open source community working under The Linux Foundation to address storage integration challenges in scale-out cloud native environments. Its vision is to connect siloed data solutions to build a self governed and intelligent data platform.

OpenCV provides a real-time optimized Computer Vision library, tools, and hardware. It also supports model execution for Machine Learning (ML) and Artificial Intelligence (AI).

GraalVM is an advanced JDK with ahead-of-time Native Image compilation.

Eclipse Hudson is a continuous integration (CI) tool written in Java, which runs in a servlet container, such as Apache Tomcat or the GlassFish application server.

The Eclipse Foundation - home to a global community, the Eclipse IDE, Jakarta EE and over 415 open source projects, including runtimes, tools and frameworks.

Oracle JDeveloper is a free integrated development environment that simplifies the development of Java EE-based composite applications and provides a complete end-to-end development for Oracle

Alpaquita Linux is the Alpine-based build fine-tuned for Java with glibc and musl support. Ideal for cloud deployment, containers, and native images.

Payara Server is fully supported, developer-friendly, open source application server. Innovative, cloud-native, optimized for production deployments.

OmegaT is a free open-source translation memory application for professional translators written in Java.

Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling.

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

Google <3 Open Source

We offer a comprehensive and contemporary toolset for COBOL application modernization available for AWS, Azure, and Google Cloud. Try them today.

Bazaar version control system: easily manage source code on Windows, Ubuntu, GNU/Linux, and Mac OS X

The world's only repository manager with FREE support for popular formats.

Free desktop project scheduling and management app with Gantt chart for Windows, Linux and macOS

Develop .NET, ASP.NET, .NET Core, Xamarin or Unity applications on Windows, Mac, Linux

The Windows SDK for Windows 11 contains headers, libraries, and tools you can use when you create apps that run on Windows.

Apache Geronimo web site

MicroK8s is the simplest production-grade conformant K8s. Lightweight and focused. Single command install on Linux, Windows and macOS. Made for devOps, great for edge, appliances and IoT. Full high availability Kubernetes with autonomous clusters and distributed storage.

A cross-language development platform for in-memory analytics

Leiningen: automating Clojure projects

The Eclipse Web Tools Platform (WTP) project extends the Eclipse platform with tools for developing Web and Java EE applications.

A flexible messaging platform that enables real-time integration and connects the Internet of Things (IoT).

The Oracle Berkeley DB family of open source, embeddable databases provides developers with fast, reliable, local persistence with zero administration. Often deployed as an 'edge' database, Oracle Berkeley DB provides very high performance, reliability, scalability, and availability for application use cases that do not require SQL

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

pgAdmin - PostgreSQL Tools for Windows, Mac, Linux and the Web

MyEclipse is the best Java IDE for the enterprise with the latest tools and technologies. A free 30 day trial lets you explore this powerful, full-featured IDE for development with Java EE, Spring, Maven, WebSphere, and more.

Apache NetBeans

B4X is a programming language and a set of cross-platform RAD development tools that allow complete beginners, citizen developers, and professionals to build real-world Android, iOS and desktop solutions

Dia is free (open source) drawing software. Sketch your favorite structured diagrams! Windows version available as a free download.

A free and open source software to merge, split, rotate and extract pages from PDF files. For Windows, Linux and Mac

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

JRebel is the award-winning Java development software that lets Java developers reload code changes instantly on 100+ frameworks. Try it for free today!

JetBrains is a cutting-edge software vendor specializing in the creation of intelligent development tools, including IntelliJ IDEA – the leading Java IDE, and the Kotlin programming language.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

InstallAnywhere delivers professional multi platform installations. Reliable installations for Windows, Linux, Apple, Solaris, AIX, HP-UX, and IBM.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Open source desktop application that provides Kubernetes, Container Management, bundled utilities on the desktop

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Built from scratch, based on 20 years of experience developing IDEs. Fleet uses the IntelliJ code-processing engine, with a distributed IDE architecture and a reimagined UI.

The Jupyter Notebook is a web-based interactive computing platform. The notebook combines live code, equations, narrative text, visualizations, interactive dashboards and other media.

An easy, intuitive tool to make 2D hand-drawn animations.

Apache Kafka: A Distributed Streaming Platform.

Apache Object Oriented Data Technology (OODT) is the smart way to integrate and archive your processes, your data, and its metadata. It facilitates the generation, processing, management, distribution, analysis of data management, data archiving, and data analytics systems allowing for the integration of data, computation, visualization and other components.

A Git GUI that offers a visual representation of your repositories. Sourcetree is a free Git client for Windows and Mac.

Build powerful reactive, concurrent, and distributed applications in Java and Scala

The Appium automation project documentation

Supercharged Git hosting with intelligent code reviews, packages, and more. Get started for free.

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

Get 10 free parallel jobs for cloud-based CI/CD pipelines for Linux, macOS, and Windows. Automate builds and easily deploy to any cloud with Azure Pipelines.

An open-source universal messaging library

A powerful IDE from JetBrains helps you develop in C and C++ on Linux, macOS and Windows.

Mbed OS is the fastest way to build IoT products with Arm processors

The Operating System for science and innovation organization ecosystems

Nuclide is built as a single package on top of Atom to provide hackability and the support of an active community. It provides a first-class development environment for React Native, Hack and Flow projects.

Sylpheed - Sylpheed はシンプル、軽量かつ高機能で使いやすい、無料のメールソフトです。Sylpheed は Windows から Linux まで様々なプラットフォームに対応しています。

Red Hat Runtimes includes a collection of cloud-native runtimes for developing Java or JavaScript applications on OpenShift.

A cross-platform IDE for C, C++, Python, QML/JavaScript and PHP

The complete Go IDE

Get started with Microsoft SQL Server downloads. Choose a SQL Server trial, edition, tool, or connector that best meets your data and workload needs.

OpenShot is an award-winning free and open-source video editor for Linux, Mac, and Windows. Create videos with exciting video effects, titles, audio tracks, and animations.

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

Lunacy by Icons8 is free graphic design software for Windows, macOS, Linux. Open, edit sketch files with ease. Built-in vector, photos, UI kits, and more.

Red Hat OpenShift Streams for Apache Kafka makes it easier to create, discover and connect to real-time data streams regardless of where they exist.

Open source EDA / electronics CAD software for Windows, macOS and Linux. Use schematic capture, create PCB designs and view them in 3D, all forever free.

Accelerate developer productivity. Gradle helps teams build, automate and deliver better software, faster.

Drupal is an open source platform for building amazing digital experiences. It's made by a dedicated community. Anyone can use it, and it will always be free.

#1 Continuous Delivery service for Windows

VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files.

OpenStack is an open source cloud computing infrastructure software project and is one of the three most active open source projects in the world.

Oracle WebLogic Server is a unified, extensible platform for developing and deploying enterprise Java applications, on-premises or in the cloud.

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

An innovative platform for hardware, clouds, and containers, built with love by you.

RAD Game Tools' web page. RAD makes Bink Video, the Telemetry Performance Visualization System, and Oodle Data Compression - all popular video game middleware.

A collaborative Kubernetes-native development solution that delivers OpenShift workspaces and in-browser IDE for rapid cloud application development.

Graphcool has sunsetted on July 1st, 2020

Godot provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel.

nopCommerce is the most popular ASP.NET shopping cart in the world based on Microsoft technologies. Free and open-source eCommerce platform

GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects.

OSSEC is a multiplatform, open source and free Host Intrusion Detection System (HIDS). You can tailor OSSEC for your security needs through its extensive configuration options, adding custom alert rules and writing scripts.

OpenFlows WaterCAD is an easy-to-use hydraulic modeling application for the analysis, design, and operation of water distribution systems.

Open-source electronic prototyping platform enabling users to create interactive electronic objects.