Excelsior JET is a complete solution for acceleration, protection, and deployment of your Java applications, certified Java compatible on a number of Windows and Linux platforms.
Excelsior JET Optimizer converts your application's classes and jars into highly optimized Intel x86 code and creates a native executable for Microsoft Windows or Linux platform. Excelsior JET Runtime is a complete Java Virtual Machine that works with both Java classes and the executables produced by the Optimizer.
It implements the Java SE 6 platform. Excelsior JET Installation Toolkit facilitates rapid creation of complete installation packages for your optimized Java applications. The JRE need not be pre-installed on end-user machines.
Read the rest of the article here