Survicate - Collect feedback on your website and find out more about your visitors.
Assist - Bring the best services to your favorite messaging apps
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
One Click Feedback - One click feedback for your newsletter
UserReport - Free online usability surveys with demographic information. Detailed click tracking for websites and feedback button for online user forum. Easy signup.
Ringbot - Have a bot call someone and tell them your message!