Apart from the survey-building, I have been using Qualaroo because it offers tons of different channels to deploy your surveys, and you can collect feedback from your users no matter where they are. There are also plenty of integration options to make the most out of the survey data.
We wanted to collect feedback from the leaving customers, so we used surveys and triggers to show our pop-up as the visitors were about to leave the website. Through the branching logic, we were able to redirect some of the visitors to the right pages and stop them from leaving. The tool was handy, and I would recommend it.
Using Qualaroo, we have been able to quickly gauge the mood of our customers by deploying NPS surveys on our website. Users never mind filling out these NPS surveys regularly because they literally take just a click.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
SatisMeter - Identify unhappy customers in your web and mobile apps, or via email, solve their issues, reduce churn and grow your business.
Google Forms - Simple web forms from Google.
ShadowAide - ShadowAide provides you with a key way to keep your finger on the pulse of your customers, using our integrated tools for capturing Net Promoter Score and customer feedback.
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
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.