Open Message Queue is an open source

Open source

The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...

 message-oriented middleware

Message-oriented middleware

Message-oriented middleware is software or hardware infrastructure supporting sending and receiving messages between distributed systems. MOM allows application modules to be distributed over heterogeneous platforms and reduces the complexity of developing applications that span multiple...

 project by Sun Microsystems

Sun Microsystems

Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...

 that implements the Java Message Service

Java Message Service

The Java Message Service API is a Java Message Oriented Middleware API for sending messages between two or more clients. JMS is a part of the Java Platform, Enterprise Edition, and is defined by a specification developed under the Java Community Process as JSR 914...

 1.1 API (JMS). In addition to support for the JMS API, OpenMQ provides additional enterprise features including clustering for scalability and high availability

High availability

High availability is a system design approach and associated service implementation that ensures a prearranged level of operational performance will be met during a contractual measurement period....

, a C API, and a full JMX

Java Management Extensions

Java Management Extensions is a Java technology that supplies tools for managing and monitoring applications, system objects, devices and service oriented networks. Those resources are represented by objects called MBeans...

 administration API. It also includes an implementation of the Java EE Connector Architecture

Java EE Connector Architecture

Java EE Connector Architecture is a Java-based technology solution for connecting application servers and enterprise information systems as part of enterprise application integration solutions. While JDBC is specifically used to connect Java EE applications to databases, JCA is a more generic...

 (JCA) called the JMSRA, that allows OpenMQ to be used by a Java EE compliant application server

Application server

An application server is a software framework that provides an environment in which applications can run, no matter what the applications are or what they do...

. OpenMQ is the default JMS provider integrated into GlassFish

GlassFish

GlassFish is an open source application server project started by Sun Microsystems for the Java EE platform and now sponsored by Oracle Corporation. The supported version is called Oracle GlassFish Server...

.

OpenMQ is based on source code

Source code

In computer science, source code is text written using the format and syntax of the programming language that it is being written in. Such a language is specially designed to facilitate the work of computer programmers, who specify the actions to be performed by a computer mostly by writing source...

 donated by Sun.

OpenMQ is free software

Free software

Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

, dual-licensed under two free software licence

Free software licence

A free software licence is a software licence which grants recipients rights to modify and redistribute the software, which would otherwise be prohibited by copyright law. A free software licence grants, to the recipients, freedoms in the form of permissions to modify or distribute copyrighted work...

s: the Common Development and Distribution License

Common Development and Distribution License

Common Development and Distribution License is a free software license, produced by Sun Microsystems, based on the Mozilla Public License , version 1.1....

 (CDDL) and the GNU General Public License

GNU General Public License

The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

 (GPL) with the classpath exception

GPL linking exception

A GPL linking exception modifies the GNU General Public License to create a new, modified license. Such modified licenses enable software projects which provide library code, to be "linked to" the programs that use them, without applying the full terms of the GPL to the using program...

.

External links

• Open Message Queue (OpenMQ) Project
• Open MQ Wiki
• GlassFish Project
• The Aquarium Latest GlassFish news and blogs