Viable Fit - Measure and improve your product market fit
MetaSurvey - MetaSurvey provides light and high engagement surveys for e-commerce.
OpinionX - Stack rank people's priorities in minutes with OpinionX's free ranking surveys.
OpenStartup.dev - A collection of open startups
Product Fit - Measure product/market fit in app with your users.
Waves Insights - Consumer Insights SDK for Messaging Platforms