YesInsights - Get Customer feedback with simple one-click or NPS surveys
Interactive NPS Calculator (by Delighted) - Calculate your NPS easily with this interactive free tool.
Wootric - Wootric is software that allows apps and websites to take customer satisfaction surveys so that you can properly gauge the popularity and success of your app through the eyes of the people using it. Read more about Wootric.
TinyNPS - Simple NPS feedback
Delighted + NomNom Integration - Turn your NPS responses into product insights
Reactful - Reactful is a real-time website optimization platform that triggers reactions to visitor intent to turn more ‘maybes’ into engaged prospects and customers.