Sitecore - Sitecore A/S has produced the Sitecore content management system since 1999.
BlockSurvey - Privacy-focused surveys, polls & forms
Pendo - Pendo helps product teams understand and guide users to create product experiences that customers love.
Refiner - Customer Feedback Surveys For SaaS
Gotcha - User-centric analytics & triggers, driven by micro-surveys
Surveys in Slack by Polly - The world's first fully immersive Slack-based survey product