SurveyCTO - Collect data you can trust Offline or online, in the field, on the street, or in the lab.
Swagbucks - Swagbucks is a loyalty program that offers individuals rewards for engaging in various activities. Users can earn reward points for performing Internet searches, purchasing items from affiliated vendors, or completing polls.
CommCare - The digital platform for impactful frontline work everywhere
InboxDollars - Earn cash for your everyday online activities.
DHIS2 - Manage aggregate data with a flexible data model which has been field-tested for more than 15 years.
Positly - Easily recruit & manage research participants for studies