This looks to be a very promising collaborative workgroup tool. Allows instantiation of multiple projects/subprojects w/ their own membership. Channel replication/dataflow push that looks fairly unique… also, standard file repos, forums, issue tracking, wiki, membership options. (Java App, runs on JOnAS, an open source J2EE application server.
LibreSource is an open free software platform that aims at hosting virtual teams and distributed communities for a large range of activities, including co-authoring, co-development and co-engineering activities, for a large spectrum of software and non-software applications. It wants to become an important structuring elements of the free software community, for both industrial and academic actors.