We provide a range of software engineering services,
from JVM porting and compiler consulting
to application software development
in Java, C++ and other languages:

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.


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.


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

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

Excelsior JET 15.3 Released
From version 15.3 onward, Excelsior JET includes the OpenJDK implementation of the standard Java SE API. Also introduced in this version is the support for Spring Boot applications. Download now or learn more.
Excelsior JET 15 Released
Version 15 introduces incremental compilation for AMD64 targets and improves application performance and scalability across all platforms.
The Excelsior JET Engineering Team Has Launched a Technical Blog
My engineering colleagues have launched a technical blog today. Visit https://www.excelsiorjet.com/blog to learn more about the inner workings of Excelsior JET and the JVM in general. The relevant posts from our main blog archive will gradually migrate to the new blog in the coming months.

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)