Exo vs. Liferay vs. JetSpeed-2

What are the key differences between JetSpeed-2, Exo, and Liferay?  All claim to be JSR-168 complaint. Which is best integrated with Eclipse and Tomcat/JBoss?

Thank you.
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I would say go for jetspeed even regardless of the technicality for the following reason
1- Jetspeed has better comunity support
2- Jetspeed is one of jakarta apache products who produced before famous opensource products like Apache Web Server, Struts, ant and Tomcat
3- then Tomcat is in the same group, hence assured integration also JBOSS default servlet engine is tomcat then assured integration too
4- IBM acquired Jetspeed to be its base for Websphere portal

do u need more reasons to go for Jetspeed

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bobwood2000Author Commented:
Okay, I'm finally convinced I will build my site using Jetspeed.

welcome :-)
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