Coordinated Restore at Checkpoint (“CRaC”) is now generally available in Azul Zulu 17 with CRaC support for Linux x86 64-bit.

Azul Platform Core

The world’s best supported builds of OpenJDK.

Formerly Zulu Enterprise / Embedded

70% less expensive
(typical savings vs. Oracle)

Azul Platform Core is designed for the enterprise, with the certified builds, tight security, and cost efficiencies you need to run today’s business–critical, Java-based services.


More Trust

Built by Java leaders, Azul Platform Core provides 100% open source, fully tested and certified, Java SE standards-compliant, well-curated builds of OpenJDK.


More Security

Azul Platform Core delivers stabilized builds backed by an industry-leading support SLA, providing quarterly security-only updates for assured rapid deployment into production.


More Value

Azul Platform Core is a one-to-one replacement for Oracle Java SE at dramatically lower costs—delivering the most architectures, package types, and configuration options available.

“Switching from Oracle JRE to Azul was as easy as it can get. It’s basically a drop-in replacement.”

Alexander Mueller, CTO

“We found it very easy to do business with Azul. Azul’s business model and terms were very flexible, and they helped to simplify our operations by removing constraints.”

Michihiro Okada, General Manager of Software R&D Division

“Azul provides a well-supported, reliable and secure Java JDK and runtime that we use in many of SAS Institute’s products and solutions. The satisfaction of thousands of SAS customers demonstrates the quality of the Azul Platform.”

Sam Penfield, Product Manager

“Azul was a drop-in replacement and migration has taken less than three months. Had we known how seamlessly and smooth the process would be, we would have switched from Oracle Java to Azul Java much earlier on.”

Michael Thalhammer, Head of Software Development

“By adopting Azul Platform Core and teaming with Azul, we ensure that our customers always have access to secure, certified, and tested builds of Java.”

Carl Gould, Co-director of Software Engineering

Calculate your savings.

Use our calculator to get an estimate of your savings from switching from Oracle Java SE to Azul.
(Our customers typically save 70%.)

Savings Calculator

Azul Pricing Inputs

Oracle Pricing Inputs

Estimated Annual Savings with Azul

Lower TCO and a true Java partnership. Talk to an account rep and learn how to maximize the value of Java with Azul.

Secure, stable, protected, up-to-date icon

Secure, stable, protected, up-to-date.

Azul is the only Java leader besides Oracle that delivers stabilized security builds, builds that enterprises traditionally prefer to use. Deploy updates with confidence, keeping your Java applications secure, stable and regression-free.

Azul also delivers full updates that combine bug fixes, new features, and security patches.

Learn More east
Verified TCK standards compliant icon

Verified TCK standards compliant.

Azul Platform Core is verified compliant with Java SE, so your new and existing applications can run without modifications.

Learn More east

Compare Pricing

Flexible pricing options to accommodate your requirements for performance, security, and value.

Guard your IP icon

Guard your IP.

Azul indemnifies Azul Platform Core subscribers and protects their software from copyleft contamination.

Learn More east
Optimize startup icon

Faster Startup and Warmup.

The Azul Zulu JVM distributed with Azul Platform Core leverages startup optimization technologies such as Coordinated Restore at Checkpoint (CRaC)* to provide instant start at optimal speed for Java applications.  

*CRaC is available for Java 17 on Linux 64-bit only

Learn More east
The best Java runtimes for OEMs & ISVs icon

The best Java runtimes for OEMs & ISVs.

Azul Platform Core support plans offer redistribution-ready downloadable runtimes, access to all security updates, technical troubleshooting, and a wide set of packaging alternatives. Azul sales will work with you to determine the bundle requirements, support, and pricing model needed to match your requirements.

Learn More east

Migrate without risk.

As a straightforward “drop-in” replacement for Oracle Java SE, switching to Azul is faster and easier than you might think. In fact, most Azul customers manage their own migration with minimal assistance and start seeing benefits almost immediately.

The best Java support in the industry.
Bar none.

There’s a reason Azul has a 100% customer satisfaction rating:
our relentless focus on helping customers unleash the true power of Java.

Product releases that meet or exceed Oracle

Long Term Support (LTS) based on 8+2 year product lifecycle model.

Check It Out east

Expert problem resolution available 24/7

Enjoy follow-the-sun coverage, strict support SLAs, and a 100% customer satisfaction rating.

Learn More east

Fast, straightforward Java migration

Our drop-in solution and advisory services make it easy to migrate from the Oracle JDK.

See How east
Azul People

Core Components

Azul Mission Control

Analyze and profile your systems during development and production.

Learn More east

Azul Commercial Compatibility Kit

The Azul Commercial Compatibility Kit (ZCCK) is designed to ensure compatibility of Azul Zulu Builds of OpenJDK (Azul’s 100% open source, certified builds of OpenJDK) and Oracle’s proprietary Java SE 6-8.

Learn More east


Apply time zone definition updates to deployed JDKs.

Learn More east

Migration Toolkit

Analyze and profile your systems during development and production.

Learn More east


IcedTea-Web is an open source implementation of Java Web Start.

Learn More east


jHiccup is an open source tool designed to measure the pauses and stalls (or “hiccups”) associated with an application’s underlying Java runtime platform.

Learn More east

jRT Socket Response Tool

Accurately track end-user response time in live apps.

Learn More east

Azul Inspector

Get insight into the system and app settings that affect performance.

Learn More east

Ready? So are we.

Our Java experts are ready to answer your questions and show you how much you could save by switching to Azul.

*Based on Oracle Java SE subscription pricing for server deployments