Category Xp Users Group - A public list of Extreme Programming user groups across the world. [Wiki] SPA-NW - A group specifically devoted to round-table discussion of agile software development practices and processes. Group serving the UK's northwest. Irish XP SIG - Home discussion list for the Irish XP SIG. XP Melbourne, Australia - A venue for XP enthusiasts in Melbourne, Australia to meet and share experiences and strategies related to agile methods, including XP XP Montreal - Discussion group for XP users in Montreal. BayXP - The San Francisco Bay Area XP Users Group.