AOT Compilation Is Coming to Java 8
on All Major Desktop Platforms.

Sign Up for Early Access

or evaluate the Java SE 7 compatible version

Excelsior JET 11 will compile your Java 8 and JavaFX 8 applications into native Windows, OS X, and Linux binaries.
It will support both 32‑ and 64‑bit Windows and Linux targets; the OS X version will be 64‑bit only.

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We make high performance, spec-compliant Java™ SE implementations for desktop, server, and embedded environments, and provide consulting services.

Excelsior JET 11 beta 1 Available
We have released the first public beta of Excelsior JET 11 for three platforms: Windows/x86, Linux/x64 and OS X.
Excelsior JET Charity Bundles Available Again
Excelsior JET Charity Bundles is essentially a "pay what you can" offer for Excelsior JET, Standard Edition licenses. The net proceeds will go to our local foundation, Save Life, which helps kids and young adults whose families cannot afford treatment for cancer.
Excelsior JET 10.5 Released
The headline is the introduction of the all-new CoreBalance™ garbage collector.

Excelsior JET
Certified Java SE JVM with a static (AOT) compiler and deployment toolkit

Accelerate and protect your desktop and server Java applications. Deploy without dependency on the JRE.

Use the most secure environment for running Eclipse RCP applications and Tomcat Web applications.

Download Now or learn more

Excelsior JET Embedded
High performance, small footprint Java SE Embedded solution

Leverage the most powerful version of the Java technology in your embedded devices with minimum overheads.

Learn More

Excelsior Delivery
Easy-to-use setup authoring tool for Windows

Create installation packages for your Windows applications, export to MSI or NSIS.

Learn More And Download

Excelsior Installer FREE
Simple installer generator for Windows apps

Learn More And Download

Family of Modula-2/Oberon-2 compilers and "via C" cross-compilers

Optimise your Modula-2/Oberon-2 programs for Windows and Linux/x86, or use a "via C" cross-compiler to target other platforms.

Download Now or learn more

Custom Compilers And Tools

From optimizing compilers to debuggers to profilers to complete custom-built IDEs, we create quality tools for all stages of software development and maintenance.


JVM Porting/Optimization

As an Oracle Java Licensee, we can help you Java-enable your hardware/OS, implement specific JSRs, or extend/tune a Java implementation for your specific application domain.


Legacy Code Solutions

Whether you need to translate your legacy sources from an obsolete programming language to a mainstream one, migrate existing applications to a new platform, or integrate them into a modern environment, we can supply custom tools that would automate most of the work.


Java Consulting

First-hand experience developing commercial software using Java SE/EE, JBoss, Tomcat, Spring, Hadoop, Lucene, Elasticsearch, MySQL, HTML5, and other modern technologies.


Algorithm-Intensive Applications Development

Speaking the language of scientists and engineers, we can help your problem domain experts convert their ideas to industrial-grade software.


By Email
Any technical questions or issues
Pricing, licensing, support renewals, etc.
All other issues.

By Phone

+7 (383) 330 55 08
We are in GMT+6 - mind the time difference

By Fax

+1 (509) 271 52 05 (intl e-fax)

By Mail

P.O.Box 100
Novosibirsk 630090 Russia

Or Come Over For a Visit

6 Lavrenteva Ave.
Novosibirsk 630090 Russia


Dmitry Leskov
Director of Marketing
+1 (408) 786 5641 skypein
(4am-4pm GMT)