—In this paper we describe the evolution of eConference, a text-based conferencing system that has turned into a collaborative platform. We draw the lessons learned from the evolution process, as first we changed the underlying communication framework, from the JXTA P2P platform to the XMPP client/server protocol, and then its overall architecture, from traditional plugin to pure-plugin system, built on top of the Eclipse Rich Client Platform. Keywords-distributed meeting system, Jabber/XMPP, JXTA, communication frameworks, Eclipse RCP, plugin systems;