Med-Quest - Cloud based Clinical EDC with a focus on speed, user interface and collection automation techniques.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
ClinicMED - Clinic MED, an open source application for Professional Clinic Management licensed under GPL
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
GNU Health - GNU Health is a Free/Libre project for health practitioners, health institutions and governments.
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.