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.
SMART-TRIAL - SMART-TRIAL is designed for medical device manufacturers who need to generate, store, and share clinical evidence.
ClinCapture - ClinCapture is the only validated electronic data capture software available to sponsors and CROs...
secuTrial - Electronic Data Capture – Simple.
Med-Quest - Cloud based Clinical EDC with a focus on speed, user interface and collection automation techniques.