Projects / Excelsior JET

Excelsior JET

Excelsior JET is a Java VM enhanced with an Ahead-Of-Time (AOT) compiler and deployment toolkit. It is certified Java Compatible on Windows and Linux on Intel x86 hardware. The 64-bit version is in the works. Excelsior JET Optimizer transforms your classes and JARs into high-performance binary executables. Excelsior JET Runtime includes a licensed Sun implementation of the Java API and Excelsior's proprietary JVM, which is responsible for Java memory management, threading, synchronization, security, and JIT compilation of classes that could not be precompiled. The Excelsior JET Installation Toolkit makes it possible to prepare your optimized application for deployment to end-user systems.

Operating Systems

RSS Recent releases

  •  10 Feb 2014 21:25

Release Notes: This release fixes a handful of bugs reported by users.

Release Notes: This release adds support for Java SE 7 and Linux/x64 and improves the ergonomics of the 64-bit compiler and performance of 64-bit executables.

Release Notes: Excelsior JET 8.0 Maintenance Pack 1 adds support for Equinox OSGi 3.9 and Eclipse RCP 4.3 to the Enterprise Edition. It also fixes a number of customer issues and delivers improvements to Memory Management and Garbage Collection logging and diagnostics.

  •  30 Apr 2013 22:16

Release Notes: Windows x64 support and memory manager throughput/robustness improvements.

  •  26 Mar 2013 12:50

Release Notes: The AMD64 instruction set is now supported. This beta release has passed the official Java Compatibility Kit test suite. The optimizing compiler can now handle most methods.


Project Spotlight


Determine if data received from a pseudo-terminal is a control sequence.


Project Spotlight


A video conversion tool.