Google Drive - Forms - Create a new survey on your own or with others at the same time. Choose from a variety of beautiful, pre-made themes or create your own. Analyze your results in Google Forms. Free from Google.
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
TellForm - Opensource form builder alternative to TypeForm
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.
SmartSurvey - Create and distribute surveys with our user-friendly yet advanced survey tool, then analyse results graphically.
Survicate - Collect feedback on your website and find out more about your visitors.