CivilHub - CivilHub is a free and open-source platform written in Python & Django for the purpose of...
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Loomio - Loomio helps groups of people make decisions together, online.
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
DemocracyOS - DemocracyOS is an open source application for online decision making.
Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.