Google Forms is a free online tool that simplifies the process of creating online forms, surveys, and saving the information submitted. Google Forms can be used to gauge student comprehension at the beginning and end of a class or a semester, to receive feedback from students or for collaborators outside the classroom, or to collect data for student research projects.
Mentimeter is a web-based application that allows live audiences to participate in polls using their mobile devices. Questions types include multiple choice, open-ended text responses, word clouds, scales, ranking, or quizzes.
iClicker is a student response system that provides instant feedback during lecture. The use of in-class polling promotes active learning and gathers information about comprehension and consensus.