I am trying to develop a new CRM product for a Housing management system and well I was wondering it is going to have alot of information would the best thing to do would be to use Drupal then build modules into that since it has core features taken care of or to just start from scrath. Items that need to be integrated: -User Management -Room Management -Key Management -Automatic Room Assignments -Calendar -Roster -Maintenance System -and more...... Is drupal the best thing, or is there a better CRM? Or go on my own! ~Simon