OpenEMR - OpenEMR is an open source electronic health records and medical practice management solution.
GNU Health - GNU Health is a Free/Libre project for health practitioners, health institutions and governments.
Med-Quest - Cloud based Clinical EDC with a focus on speed, user interface and collection automation techniques.
OpenMRS - OpenMRS is a community-developed, open source, enterprise electronic medical record system platform.
ClinicMED - Clinic MED, an open source application for Professional Clinic Management licensed under GPL
Practice Fusion - Web-based Electronic Medical Records (EMR), Electronic Health Records (EHR).