Kin-Man Chun shows
how to use
JSPWiki on top of SJS AS 8.x and other servers based on
the GlassFish code base.
JSPWiki is a popular Java-based Wiki;
among others, it is used at
JSPWiki is also used in Sun's
Portal Server 7.0, which supports
a bunch of collaboration functionality through a notion of community. PS 7.0 looks very good; Rich goes into more detail, including a link to where the bits will be later this week.