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
Survicate - Collect feedback on your website and find out more about your visitors.
Eloquant - ELOQUANT provide a comprehensive software solution that can manage interactions and feedback while...
Heeduser - Heeduser is the customer engagement platform that helps companies build better relationships with their customers and prospects, through the better online customer community
Usabilla for Websites - Let your users give feedback anywhere, anytime.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.