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Excelsior JET

Accelerate, protect, and deploy your Java™ applications

Excelsior JET is a compliant Java SE 6 technology implementation with an ahead-of-time (AOT) compiler and a deployment toolkit. Use it if you want to:

  • Speed up your Java applications without any source code changes or hardware upgrades
  • Protect your Java code from decompilers without compromising performance
  • Build compact, professional installers for your Java applications without dependency on the JRE

Curious? Learn how it works 

In a hurry? Watch a demo or read the data sheet 

Want to give it a try? Download a free trial 


Excelsior JET has passed the Java Compatibility Kit (JCK) test suite licensed from Sun Microsystems and is certified Java Compatible on a number of platforms.

Further reading

How to get started? Download a fully functional evaluation copy of Excelsior JET and follow these getting started tutorials.

Want to learn more? Check out the FAQ and the feature matrix, dispel a few myths, visit the App Gallery and make sure to read the system requirements.

Need help? Search the Knowledge Base, download the latest updates, ask questions in the forum, or read the documentation.

News and announcements

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