Solismed - A free clinic management system designed for use by independent practices and free clinics. It's designed to automate your business operations and help you get things done more quickly.
OpenClinica - OpenClinica is an open source clinical trials software.
GNU Health - GNU Health is a Free/Libre project for health practitioners, health institutions and governments.
Castor EDC - Castor offers you a user-friendly and fully featured application for electronic data collection.
OpenMRS - OpenMRS is a community-developed, open source, enterprise electronic medical record system platform.
Medidata CTMS - Medidata CTMS seamlessly integrates with Medidata Rave to provide real-time views into study progress without manual tracking.