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

Refiner - Customer Feedback Surveys For SaaS

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

Simple Form - Simple Form allows you to setup forms with any kind of data

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.

Survais - Non intrusive micro-surveys