Doorbell.io - Collect in-app user feedback. Available on websites, iOS, and Android.
GetSatisfaction - Get Satisfaction is the leading customer engagement platform that helps companies build better relationships with their customers and prospects, through the best online customer community.
Rayfeed - Improve your product with video and audio feedback 📹🔊
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
Sleekplan - Embedded customer feedback management made for SaaS - The most sleek solution to collect and manage user feedback, keep a changelog and know your customers' needs.
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.