OSS Libre Software References
Crosswebs, a.k.a. LIBRE-NET
VT Survey tool, web-based tool for creating and running online surveys (uses tomcat).
Understanding Open Source Software Development, companion web site to Feller and Fitzgerald's book.
Managing Open Source Projects, Jan Sandred, Reviewed here by Nick Christensen
Research Priorities in Open Source Software Development, FLOSS Workshop paper by James Herbsleb - see section on Collaboration technology