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https://canny.io/Feature voting tool pricing | Hellonext
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https://userecho.com/GetFeedback : Customer Experience Feedback Platform & Survey Software
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https://getfider.com/쉽고 실행 가능한 사용자 피드백 | UserVoice
https://uservoice.com/Nolt : Feedback boards your users will love
https://nolt.io/