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.
Iterate - Get the feedback you need to build better products
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.
LiveForm - Forms for your websites and blogs.