Event Registration and Management tools


 * ZooKeepr - used by linux.conf.au - https://github.com/zookeepr/zookeepr (open source)
 * COD - The Drupal "Conference Organising Distribution" - http://usecod.com (open source LAMP)
 * Joind.in - used by a lot of PHP conferences - https://joind.in/ (open source)
 * Event Arc - Melbourne based but not open source - http://www.eventarc.com/ (used previously by BarCampGeelong and WordCampMelbourne)
 * EventBrite - US based, not open source - http://www.eventbrite.com/ (used previously by Software Freedom Day Melbourne)
 * UberCart - used by Drupal DownUnder, Drupal e-commerce module, open source - http://drupal.org/project/ubercart
 * Guidebook.com - not used AFAIK in the Aussie open source scene - provides mobile guide to large events - http://www.guidebook.com
 * lanyrd - not open source - social conferencing tool - http://lanyrd.com