"XPLabs was founded in the year 2000 in Rome, Italy for the purpose of forming a group of experts in software engineering who believe in the benefits of XP and wish to apply it and promote its use."
Labs:
Repo Margining System
Papers:
"Repo Margining System: Applying XP in the Financial Industry" by PiergiulianoBossi and FrancescoCirillo
"Tracking - A Working Experience" by KlondikeTeam?
"XP: Delivering the Competitive Edge in the Post-Internet Era" by FrancescoCirillo
Experiences:
"Rugby - Teamwork Is the Key" by PietroToschi?