Computer software and downloadable software applications for providing operator instructions in conjunction with the use of defibrillators during an emergency incident, defibrillator asset management, monitoring or tracking the location, availability or operational status of defibrillators, training on the use of automated external defibrillators (AEDs), cardiopulmonary resuscitation (CPR) training, cardiac incident management and reporting, identifying the location of public access defibrillators, informing responders of the occurrence and location of potential cardiac arrest incidents