Loomio - Loomio helps groups of people make decisions together, online.

BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.

PollUnit - Create and customize public or anonymous votings, surveys, free tables, idea collections or audio, video and photo contests.

Padlet - Visual boards for organizing anything.

Mentimeter - a web-based polling tool for workshops, conferences & events

Socrative - Socrative helps teachers engage the class with educational activities to measure and visualize...