Jetpack - Jetpack offers SEO and security plugins for Wordpress.
SurveyCTO - Collect data you can trust Offline or online, in the field, on the street, or in the lab.
WP User Manager - The most customizable profiles, community builder and membership WordPress plugin
CommCare - The digital platform for impactful frontline work everywhere
UpStream Plugin - UpStream Plugin is a free-to-use project management plugin that allows you to manage various types of projects right from your WordPress site.
DHIS2 - Manage aggregate data with a flexible data model which has been field-tested for more than 15 years.