I think the OP means EMR/EHR software. Wikipedia has a pretty comprehensive list at http://en.wikipedia.org/wiki/List_of_open-source_healthcare_software#Electro

I think the OP means EMR/EHR software. Wikipedia has a pretty comprehensive list at http://en.wikipedia.org/wiki/List_of_open-source_healthcare_software#Electronic_health_or_medical_record http://en.wikipedia.org/wiki/List_of_open-source_healthcare_... I am in the health IT space and VistA (http://www.ehealth.va.gov/VistA.asp http://www.ehealth.va.gov/VistA.asp) is likely the most widely used in terms of patients stored. I hear http://www.open-emr.org/ http://www.open-emr.org/ is the most developer friendly.