Dr. Bottle - Combines two things that goes together, pills and water
SurveyCTO - Collect data you can trust Offline or online, in the field, on the street, or in the lab.
Popit - Never miss your pill again
DHIS2 - Manage aggregate data with a flexible data model which has been field-tested for more than 15 years.
VGS Collect.js - Instantly make any form PCI & HIPAA compliant 💪
Open Data Kit - The Open Data Kit community produces free and open-source software for collecting, managing, and using data in resource-constrained environments.