If you’ve opened a work email in the last three years about Oracle Java license changes, you already know why so many engineering teams are hitting search for 7 Alternatives for Oracle Java. What started as quiet licensing tweaks in 2019 turned into full-blown per-employee billing that now costs average mid-sized companies over $60,000 annually just for desktop Java runtimes. Most teams don’t even use Oracle-specific features—they stuck with the familiar distribution for years because no one wanted to break production.

This isn’t just about saving money, either. Modern development teams need faster security patches, better container support, and transparent update schedules that don’t come hidden behind enterprise sales calls. In this guide, we’ll break down every viable option, walk through real-world use cases, and help you skip the common migration mistakes that have sunk other teams. You won’t find random half-maintained projects here—every option on this list is production-ready, actively supported, and already used by millions of developers worldwide.

1. OpenJDK (The Official Upstream Reference)

Let’s start with the foundation. OpenJDK is the original open source Java implementation that every other distribution on this list builds from. Oracle leads its development, but the code is fully open, released under the GPL license with no commercial restrictions for personal or business use. For teams that want exactly what Oracle builds, none of the extra baggage, this is the baseline option. Every six months, a new major version drops right on schedule, with security updates released every quarter.

Before you jump in, understand the tradeoffs. OpenJDK only gets public updates for 6 months after each major release. That means if you don’t upgrade versions twice a year, you will stop receiving security patches. This works great for active modern projects, but it becomes a nightmare for legacy systems that run on older Java versions for years at a time.

Who should pick vanilla OpenJDK?

• Small teams building new greenfield applications
• Developers who want the absolute latest Java features first
• Teams that already upgrade their runtime twice per year reliably
• Anyone testing new Java language features before general release

You won’t get dedicated support here, and there are no pre-built optimized packages for specialized hardware. But if you just need a working Java runtime with zero license risk, this is the simplest place to start. Most package managers for Linux, Windows, and macOS now offer official OpenJDK builds right in their default repositories.

2. Amazon Corretto

If you run anything on AWS, you have almost certainly already run code on Amazon Corretto. This is Amazon’s production distribution of OpenJDK, built for internal use at Amazon before they released it publicly in 2018. Today it powers every Amazon retail service, AWS itself, and over 1 million external developer teams. The biggest draw here is long term support: Amazon provides free public updates for Corretto LTS versions for a full 8 years after release.

Amazon doesn’t add any proprietary changes to the OpenJDK code. Every build passes 100% of the official Java compatibility test kit, so you can drop Corretto into an existing Java application and it will work exactly the same way it did on Oracle Java. There are no license fees, no usage tracking, and no required registration to download or use it.

Java Version	Support End Date
Java 8	June 2026
Java 11	September 2027
Java 17	September 2029
Java 21	September 2031

Corretto also includes optional performance optimizations for AWS infrastructure, including faster network calls on EC2 instances and native integration with Lambda cold starts. You can run it anywhere, not just on AWS, and it will work perfectly fine. For teams that want zero-cost long support with a big company standing behind the build, this is one of the most popular options on this list.

3. Azul Zulu

Azul Zulu is the most established commercial OpenJDK distribution on the market, and they also offer a completely free community edition that works for most use cases. Azul was one of the first companies to offer alternative Java runtimes, back when Oracle first announced licensing changes. Today they support more Java versions and more hardware platforms than any other distributor.

The real standout for Zulu is platform support. While most distributions only build for x86 and ARM 64 bit systems, Zulu offers builds for 32 bit systems, PowerPC, MIPS, and even legacy mainframe hardware. This makes it the only real option for teams running Java on old industrial equipment, point of sale systems, or specialized server hardware.

When evaluating Zulu, keep these facts in mind:

1. Free community builds get LTS updates for 10 years
2. Paid support plans include 24/7 emergency patches and custom build requests
3. All builds are 100% Java TCK certified compatible
4. No license audits, no usage reporting required for any edition

Many enterprise teams pick Zulu specifically for their support team. If something breaks in production at 2AM on a holiday, you can get a real engineer on the phone who works on the JDK itself. The free edition is perfectly fine for most small and mid sized teams, and you can upgrade to paid support at any time without changing your runtime.

4. Eclipse Temurin

Eclipse Temurin is the community run OpenJDK distribution managed by the Eclipse Foundation. This is the default Java runtime that most open source projects now recommend, and it has become the standard for container images on Docker Hub. Unlike the company backed distributions on this list, Temurin is governed by an independent community with no single vendor controlling the project.

Every major company that works with Java contributes to Temurin, including IBM, Google, Red Hat and Microsoft. This shared governance means the project will never suddenly change license terms or drop support for a popular version. All builds are fully open, audited by multiple independent teams, and released on a fixed public schedule.

• Used as default Java in Ubuntu, Fedora and Debian Linux distributions
• Official container images get over 1 billion downloads every month
• Free public LTS support for minimum 4 years, often extended
• No telemetry, no tracking, no hidden code of any kind

If you are building open source software, or you want a runtime that will never be locked to a single vendor, Temurin is the safest long term choice. Migration from Oracle Java is almost always seamless, and most popular build tools already default to Temurin in their latest versions. The only downside is there is no official first party commercial support, though many third party companies offer support contracts for Temurin deployments.

5. Microsoft Build of OpenJDK

Microsoft released their official OpenJDK distribution in 2021, and it has quickly become a favorite for teams working on Windows or Azure. Just like Corretto, this is the same runtime Microsoft uses internally for all their own Java services, including Minecraft, Xbox backend systems and Azure cloud services. It is completely free for any use, commercial or personal.

The biggest advantage to Microsoft’s build is Windows performance. Microsoft has added dozens of small optimizations that make Java run significantly faster on Windows desktops and servers, including better memory management and native integration with Windows system tools. This is the best option for any team that runs Java applications on end user Windows computers.

Feature	Microsoft Build of OpenJDK	Oracle Java
License Cost	Free forever	$15 / user / month
Windows Performance	Optimized	Standard
LTS Support Length	6 years	8 years (paid only)
Usage Tracking	None	Enabled by default

Microsoft also offers paid enterprise support for this distribution, with tight integration into Azure support tickets if you run workloads on their cloud. Even if you don’t use Azure, this is a very solid well maintained build that works cross platform on Linux and macOS as well. It gets security patches on the same schedule as Oracle Java, often even faster for critical Windows vulnerabilities.

6. GraalVM Community Edition

GraalVM is not just another OpenJDK distribution—it is a next generation runtime that can run Java code dramatically faster than standard implementations. Originally built at Oracle, GraalVM Community Edition is fully open source and released under a permissive license with no commercial usage restrictions. For modern cloud native applications, this is the most interesting option on this list.

The big feature of GraalVM is native image compilation. You can compile your Java application down to a single standalone native executable that starts in milliseconds and uses a fraction of the memory of a standard Java runtime. This is a game changer for serverless functions, CLI tools, and containerized microservices.

Teams that will benefit most from GraalVM:

1. Teams building serverless applications on Lambda, Cloud Functions or similar
2. Developers building command line tools with Java
3. Teams looking to cut cloud infrastructure costs for microservices
4. Anyone who wants to run Java without installing a separate runtime

GraalVM is 100% compatible with standard Java code for most use cases, though very rare legacy libraries may have issues. It also still gets all standard Java security updates and language features. For new projects, this is absolutely worth testing. Many teams report cutting their cloud hosting bills by 50% or more just by switching their runtime to GraalVM.

7. Liberica JDK

Liberica JDK is built by BellSoft, a smaller independent company focused entirely on Java runtimes. It flies under the radar for many teams, but it is one of the most polished and well supported distributions available today. It is also the only distribution that offers a full 12 years of free long term support for LTS Java versions, longer than any other option on this list.

Liberica also offers specialized builds for different use cases, including a tiny runtime for embedded devices, an optimized build for cloud containers, and a full desktop runtime with JavaFX included out of the box. If you need JavaFX for desktop applications, Liberica is almost always the best choice since most other distributions have dropped default JavaFX support.

• 12 years free public support for all LTS versions
• Builds available for 30+ different hardware and operating system combinations
• JavaFX included by default with all standard distributions
• Flat monthly support pricing with no per user fees

BellSoft also offers very reasonable paid support plans, with direct access to the engineers that build the JDK. For teams that need to support a very old Java version for the next decade, or teams building cross platform desktop Java applications, Liberica is an excellent choice that doesn’t get nearly enough attention.

Every one of these 7 alternatives for Oracle Java is production ready, and there is no single perfect choice for every team. For most teams just starting their migration, you can’t go wrong with either Amazon Corretto or Eclipse Temurin as your default starting point. Test one runtime in a non production environment first, run your full test suite, and you will likely find that everything works exactly as it did before. Most teams complete their full migration from Oracle Java in less than two weeks with zero production issues.

Don’t wait for the next Oracle license audit or price increase to make the switch. Pick one option from this list that matches your team’s support needs, run a test deployment this week, and start saving money while getting better transparency and faster updates. If you have already migrated, share your experience with other teams—most developers still don’t realize how many great free alternatives are available today.