The best alternatives to Protoloop are Canny, Feedback Fish, and Burner Page. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— The most accurate API for conversational speech-to-text
Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap. Helping teams listen to their users to build better products. Feedback is the breakfast of champions.
Using burner pages to measure user interest is a proven method used by the world's most successful companies. We package everything entrepreneurs need to build, host and measure your pages and collect user feedback, with a few clicks and no code.
Learn to read the minds of your customers, co-workers and followers with this fully-customizable and light-weight toolkit for collecting and processing user feedback. For free.