Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.
Zonka Feedback - Top feedback app designed to collect customer feedback on iPad & Android tablets, Online Surveys on Website, Mobile, Email & SMS. Track NPS & Other Metrics.
Criteo - Build, scale, and activate first-party audiences with The Commerce Media Platform.
FeedbackServer - asp.net survey software Web based and open source software, for purchase or hosted, written in ASP.NET for Nsurvey
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
KeySurvey - KeySurvey provides survey and questionnaire tools.