idea.informer - Idea Informer is a idea forum similar to uservoice or getsatisfaction.

Nolt - A fast & beautiful way to collect user feedback

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

HunchBuzz - Idea/Innovation Management software for Companies, Government, Education, NGO's.

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.

Fider - Fider is an open source, cross platform and free to use customer feedback platform for companies...