GetSatisfaction - Get Satisfaction is the leading customer engagement platform that helps companies build better relationships with their customers and prospects, through the best online customer community.

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

UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system

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

UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.

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