Press Releases

Azul Systems Releases Zulu and Zulu Enterprise Builds of OpenJDK with Full Support for Java 9

Zulu is 100% open source with support for Java SE 9 plus Java 8, 7 and 6

September 21, 2017

SUNNYVALE, Calif., September 21, 2017 – Azul Systems (Azul), the award-winning leader in Java runtime solutions, today announced the immediate availability of Zulu builds of OpenJDK supporting the Java SE 9 standard. All Zulu builds are tested using the OpenJDK Community Technology Compatibility Kit (TCK) and certified by Azul, and are free to download and use without restrictions. Azul also offers cost-effective Zulu Enterprise support plans for enterprises who prefer to deploy open source technologies and require timely Java security updates and bug fixes along with 24 x 7 x 365 access to Azul’s Support organization.

As with all prior versions of Zulu, the Java SE 9 GA release supports all major Linux distros, desktop & server versions of Windows, and macOS across public, private and hybrid clouds and various virtualization and container technologies.

“We’ve successfully migrated from Oracle HotSpot to Zulu Enterprise and have been very pleased with the results,” said Attila Bukta, Director of OMS Service Reliability Engineering at Workday, Inc. “We’ve seen identical Java application performance, received timely security updates, and the open source nature of Zulu has enabled us to reduce our ongoing JDK/JVM support costs. Azul also fixed a long-standing JVM bug that had been dogging our operations team for years, demonstrating Azul’s expertise in triaging and fixing problems and the quality of their support and engineering teams.”

“Over the past 4 years Zulu has emerged as a leading candidate for Java developers and DevOps teams who prefer open source,” said John Abbott, Founder and Research Vice President at 451 Research.

“Zulu, our tested and certified builds of OpenJDK, is trusted and adopted by users ranging from Global 1000 enterprises to early-stage startups and we are pleased to now add certified support for Java 9”, said Scott Sellers, president and CEO of Azul Systems. “In a world where unpatched open source software is considered an existential risk, choosing Zulu Enterprise enables enterprises to access timely access to new releases, security updates and bug fixes, along with long-term support for older versions of Java going back to Java 6, all verified Java SE compliant and all backed by the world’s best support organization exclusively focused on Java and the Java runtime.”

To learn more about Zulu and Zulu Enterprise, visit .

Certified builds of Zulu are available for free download (no registration required) at

Zulu Enterprise Support plans are summarized at

Azul Deputy CTO and Java Champion Simon Ritter has blogged on Java 9 extensively. Recent posts include: and Simon’s posts can be found at

For a complete list of new features in Java SE 9 and OpenJDK, visit the OpenJDK project website at

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