open-source ESB

Is it feasible for you to cite some popular open-source ESB?

There are lots of popular open source ESBs.

What we see however is that the two most popular at this moment are Mule and ServiceMix.

And new interesting one though which has recently gained a lot of attention is Spring Integration.

Probably the easiest ESB to get started with is Mule. It provides a low entry level, very powerful ESB. If you're interested in a JBI compliant ESB to get started with ServiceMix is probably the easiest.

In chapter 1 of the book we provide the following overview of open source ESBs (you can also add Apache Camel - http://activemq.apache.org/camel to the list):

Apache ServiceMix
http://servicemix.apache.org
Apache JBI implementation with a lot of JBI components

Apache Synapse
http://ws.apache.org/synapse
ESB focused on web services support based on Apache Axis2

Apache Tuscany
http://incubator.apache.org/tuscany
Implementation of the (SCA) specification

ChainBuilder ESB
http://www.chainforge.net/
A JBI-based ESB that focuses on providing graphical tools to ease the development effort

FUSE ESB
http://open.iona.com/products/fuse-esb/
IONA�s open source ESB offering based on Apache ServiceMix

JBoss ESB
http://labs.jboss.com/jbossesb/
The JBoss implementation of an ESB based on JBoss messaging

Mule
http://www.mulesource.org
Lightweight ESB with a custom implementation model

OpenAdapter
https://www.openadaptor.org/
EAI-based platform that provides a number of adaptors to implement integration solutions

Open ESB
https://open-esb.dev.java.net
JBI implementation provided by Sun that provides great tool support with NetBeans

PEtALS
http://petals.objectweb.org/
Another JBI-based ESB, hosted by OW2 (formerly ObjectWeb)

Spring Integration
http://www.springframework.org/spring-integration
An integration framework that is provided by the well-known Spring Framework

WSO2 ESB
http://wso2.com/products/esb/
WSO2�s open source ESB offering based on Apache Synapse