Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Open Data Kit - The Open Data Kit community produces free and open-source software for collecting, managing, and using data in resource-constrained environments.
Qualtrics - Qualtrics is the most trusted research platform, helping brands make crucial business decisions. From surveys to insights to action.
CommCare - The digital platform for impactful frontline work everywhere
Clearbit - Clearbit provides Business Intelligence APIs
DHIS2 - Manage aggregate data with a flexible data model which has been field-tested for more than 15 years.