What OpenJDK does

OpenJDK is the open-source reference implementation of the Java Platform, Standard Edition (Java SE), stewarded by Oracle Corporation and developed as a collaborative community project under the GNU General Public License version 2 (GPLv2). Founded in November 2006 when Sun Microsystems released the JDK source code, OpenJDK provides the canonical Java Development Kit including the Java compiler (javac), the HotSpot Java Virtual Machine, core class libraries, and the supporting tooling (jtreg regression harness, jextract for native bindings). It is used daily by millions of developers and thousands of organizations across virtually every industry, including enterprise software, mobile (Android), cloud-native, embedded, and high-performance computing workloads. The project serves a horizontal, community-driven user base rather than a defined paying customer cohort, and the JDK 26 release (March 17, 2026) is the current general-availability version, with JDK 27 targeted for September 15, 2026, on a fixed six-month release cadence.

The technical architecture is a platform-plus-projects model. The core JDK is supplemented by a portfolio of specialized projects: Project Amber delivers productivity-oriented language features (pattern matching, records, sealed classes, text blocks); Project Babylon extends Java into foreign programming models such as GPU compute, SQL, and differentiable programming through code reflection; Project Leyden focuses on ahead-of-time compilation and object caching to improve startup and footprint; Project Panama provides the Foreign Function & Memory API and the jextract tool for native interoperability; Project Valhalla introduces value classes and objects that combine object-oriented abstractions with primitive-like performance; and Project Loom delivers lightweight virtual threads and structured concurrency. The project is also actively expanding hardware support across AArch64, RISC-V, s390x, BSD, Haiku, MIPS, PowerPC/AIX, and mobile ports.

OpenJDK's business model is non-commercial at the project level: code and binaries are distributed freely under GPLv2, with production-ready binaries available from Oracle at jdk.java.net. OpenJDK itself has no revenue; the open-source project is funded indirectly through the sponsorship of organizations — particularly Oracle, which also sells commercially-licensed JDK binaries from the same codebase — and through developer time contributed by Red Hat, SAP, Google, Microsoft, and others. Distribution flows through self-serve channels (Oracle downloads, GitHub) for individuals and communities, and through vendor channels (Oracle, Red Hat, Amazon Corretto, Microsoft, Azul, Adoptium) for enterprise customers requiring support and licensing guarantees. Governance follows the Java Community Process, with each major release specified by a Java Specification Request (JSR) and features tracked through the JDK Enhancement Proposal (JEP) process.

Name

OpenJDK

Legal name

OpenJDK

Website

https://openjdk.org

Company type

Private

Founded year

2006

Operating status

Operating

Short description

OpenJDK is the open-source reference implementation of the Java SE Platform, stewarded by Oracle and developed by a global community. It delivers the JDK and sub-projects like Valhalla, Panama, and Babylon under GPLv2 to millions of developers and thousands of enterprises worldwide.

Ownership category

akta.pro rank

Product category

Java Development Kit (Open-Source Runtime)

NAICS

Computer Systems Design Services (541512)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Developer Tooling & SDK Platforms (BPAMAOAD)

Keywords

• Open-source JDK
• Java SE platform
• Java runtime development
• Open-source compiler
• Virtual machine software

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations

Revenue model

1. Open Source Distribution: OpenJDK is distributed freely under the GNU General Public License version 2 (GPLv2). The project does not generate revenue directly. Oracle and other organizations sponsor the development by employing contributors and providing infrastructure. Vendors like Oracle, Red Hat, and others build and distribute commercial JDK products based on OpenJDK.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels10 records

Core offering

OpenJDK provides the open-source reference implementation of the Java Platform, Standard Edition (Java SE), delivering the complete Java Development Kit (JDK) including the javac compiler, the HotSpot Java Virtual Machine, core class libraries, and developer tools. The project organizes development around specialized sub-projects such as Amber, Babylon, Leyden, Loom, Panama, and Valhalla that incubate new language features and JVM capabilities released on a six-month cadence.

Product overview

OpenJDK is the open-source reference implementation of Java SE, providing the complete Java Development Kit (JDK) as a free, GPL-licensed development platform. The offering is a platform-plus-projects architecture where the core JDK is supplemented by specialized projects: Project Amber delivers productivity-oriented language features (pattern matching, records, sealed classes); Project Babylon enables GPU programming and foreign programming models through code reflection; Project Leyden optimizes startup and performance through ahead-of-time compilation; Project Panama enriches JVM-native interoperability via the Foreign Function & Memory API and jextract tool; Project Valhalla introduces value objects for primitive-like performance; Project Loom provides lightweight virtual threads; and jtreg is the test harness for JDK regression testing. Oracle provides both free GPL-licensed OpenJDK binaries and commercially-licensed JDK binaries from the same code base.

Differentiator

Problem solved

Functional benefit

Products and services

• JDK (Java Development Kit) The Java Development Kit is the primary deliverable of the OpenJDK project, providing compilers, runtime environments, and development tools for building Java applications. Released on a six-month cadence with versions like JDK 26 (March 2026) and JDK 27 (September 2026 planned), it serves professional Java developers and enterprises building server-side, cloud-native, mobile, embedded, and high-performance computing applications.
• Project Amber Project Amber explores and incubates smaller, productivity-oriented Java language features such as pattern matching for switch and instanceof, records, sealed classes, text blocks, switch expressions, and local-variable type inference (var). Sponsored by the Compiler Group, its features move through preview stages before becoming official Java Platform components available to Java developers.
• Project Babylon Project Babylon extends Java's reach to foreign programming models such as SQL, differentiable programming, machine learning models, and GPUs through an enhancement called code reflection. Sponsored by Core Libraries and Compiler Groups, it creates Java libraries for GPU programming using the Heterogeneous Accelerator Toolkit (HAT).
• Project Leyden Project Leyden improves startup time, time to peak performance, and footprint of Java programs through ahead-of-time compilation techniques, class loading and linking optimizations, command-line ergonomics, method profiling, and object caching. Sponsored by HotSpot and Core Libraries Groups, it publishes early-access builds at jdk.java.net/leyden.
• Project Panama Project Panama interconnects the JVM with foreign (non-Java) APIs, particularly C interfaces. It includes the Foreign Function & Memory API, the Vector API, the jextract tool for generating Java bindings from native library headers, and native library management. Sponsored by the HotSpot Group, it is aimed at Java developers needing efficient native interoperability without JNI.
• Project Valhalla Project Valhalla augments the Java object model with value objects, combining object-oriented programming abstractions with primitive-like performance characteristics. Currently developing value classes and objects, null-restricted storage, array enhancements, and efforts to unify primitives and classes, it is sponsored by the HotSpot Group and aimed at Java developers building performance-sensitive applications.
• Project Loom Project Loom introduces lightweight concurrency to Java, providing virtual threads and structured concurrency for improved scalability and simpler concurrent programming models. It targets Java developers building high-throughput server-side and cloud-native applications.

Quantifiable outcome

• Six-month release cadence with new JDK versions every March and September
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature8 records

Partnerships

One partnership is on record.

• OracleprimaryOthersOracle serves as the primary steward of OpenJDK, providing significant development resources, infrastructure, and governance. Oracle employs many OpenJDK contributors, hosts the main website and mailing lists, and coordinates the release process. Oracle also provides free GPL-licensed OpenJDK binaries at jdk.java.net alongside its commercially-licensed JDK offerings.

Scale indicators5 records

Recent moves12 records

Expansion highlights6 records

Direct peers

• Microsoft Build of OpenJDK: Microsoft distributes OpenJDK-based binaries with optimizations for Windows and Azure. Comparable as a major-vendor OpenJDK distribution targeting enterprise and cloud deployments on Microsoft's platform.
• Azul Zulu: Azul's Zulu is an OpenJDK-based distribution offering free and commercially-supported JDK builds across multiple platforms. Comparable as a competing vendor distribution targeting enterprises that need free binaries plus optional paid support.
• BellSoft Liberica JDK: BellSoft Liberica is an OpenJDK-based distribution offering free and commercially-supported JDK builds including ARM and embedded targets. Comparable as a competing vendor distribution, with particular strength in ARM and smaller-footprint deployments.
• Red Hat OpenJDK: Red Hat distributes OpenJDK-based builds packaged with RHEL, providing long-term support and integration with Red Hat's enterprise platform. Comparable as a major-vendor OpenJDK distribution with strong Linux integration and enterprise focus.
• Oracle JDK: Oracle's commercial JDK is built from the same OpenJDK source code but distributed under a commercial license with paid support. Most directly comparable product, sharing identical upstream code while differing in licensing, support model, and (historically) some bundled tooling.
• SAP SapMachine: SapMachine is SAP's OpenJDK distribution used for SAP's own products and offered to customers. Comparable as another major-vendor OpenJDK distribution with similar upstream code base and enterprise support models.
• Eclipse Adoptium (Temurin): Adoptium is an Eclipse Foundation project producing Temurin, a free, GPL-licensed OpenJDK distribution with TCK-tested binaries. Directly comparable as another vendor distribution of the same upstream OpenJDK code, serving Java developers and enterprises requiring production-ready builds.
• Amazon Corretto: Amazon's Corretto is a free, OpenJDK-based distribution with multi-year LTS support, optimized for AWS workloads. Comparable as a competing vendor distribution backed by a major cloud provider with similar technical foundation and overlapping enterprise target audience.

Emerging players

• GraalVM: GraalVM is a polyglot JVM with advanced JIT/AOT compilation and native-image capability, founded by Oracle. Comparable as an alternative JVM/runtime technology targeting performance-sensitive and polyglot workloads that compete for the same modernization narrative as Project Leyden.
• Eclipse OpenJ9: OpenJ9 is an alternative JVM implementation originating from IBM J9, used with OpenJDK class libraries. Comparable as a competing JVM technology targeting similar workloads but with different runtime characteristics (smaller footprint, faster startup).

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/openjdk

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OpenJDK