OpenClinica - OpenClinica is an open source clinical trials software.
Castor EDC - Castor offers you a user-friendly and fully featured application for electronic data collection.
SMART-TRIAL - SMART-TRIAL is designed for medical device manufacturers who need to generate, store, and share clinical evidence.
secuTrial - Electronic Data Capture – Simple.
Antidote - Antidote is an iOS client for Tox. It works on both iPhone and iPad.
Mosio - Mosio helps researchers engage, retain, and collect data from study subjects more efficiently and effectively with text messaging.