*'''[[Transition of Care]]''': Read [http://www.rwjf.org/content/dam/farm/reports/issue_briefs/2012/rwjf401314 this] for background. I actually consider care transition to be a part of enterprise Electronic Health Records (EHRs), but there have recently been a number of companies that are focused on creating solutions for managing the transition of patient from one care setting to another (e.g. discharge from inpatient facility to home or PCP care). This list doesn't include the traditional EHR vendors.
*'''[[Care Collaboration]]''': Solutions that focus on making it easier for different caregivers (family, relatives, clinicians, etc.) and teams to work with one other in context of a single patient's care. Like Transition of Care, this is something that conventional enterprise EHRs would ideally provide, but niche companies are emerging focused on just this value proposition. Also note that the line between care collaboration and transition of care solutions is bit blurry. There is no consensus or explicit definition, but from my perspective, both belong to the overall topic of [http://www.qualityforum.org/
projects/ care_coordination.aspx Care Coordination].
*'''[[Population Health Management]]''': Healthcare IT software related to managing a large group of patients. Includes vendors offerings that have to do with registries, research cohorts, patient panel management, etc.