Excelsior JET (http://www.excelsior-usa.com/jet.html?clja-jet350w) is a
Java VM implemented as a combination of three major components:
optimizing ahead-of-time (AOT) compiler, Caching JIT compiler, and high
performance runtime. It supports J2SE versions 1.3.0-1.4.2 and is
currently available on Windows only, though Linux version is under
development.

Version 3.5 is a major release aimed at improving application
performance and the product's ease-of-use.

Major new features in Excelsior JET 3.5:

   * Endorsed Standards Override Mechanism is supported
      You can now replace XML and CORBA APIs with newer versions

   * xjava launcher (similar to the JRE "java" tool) with JIT cache
     optimization interface introduced (Professional Edition only)

   * Ease-of-use of the JetPerfect Global Optimizer (available in the
     Professional Edition only) has improved

Full list of improvements:
http://www.excelsior-usa.com/jetlatest.html?clja-jet350w

Learn more about the product:
http://www.excelsior-usa.com/jetpi.html?clja-jet350w

Download the fully functional Evaluation Package:
http://www.excelsior-usa.com/jetdleval.html?clja-jet350w