Med-Quest - Cloud based Clinical EDC with a focus on speed, user interface and collection automation techniques.
OpenClinica - OpenClinica is an open source clinical trials software.
freemd - Dr. Schueler has been an emergency physician, teacher, and author for over twenty five years.
SMART-TRIAL - SMART-TRIAL is designed for medical device manufacturers who need to generate, store, and share clinical evidence.
ClinicMED - Clinic MED, an open source application for Professional Clinic Management licensed under GPL
secuTrial - Electronic Data Capture – Simple.