1Flow - The leading in-app survey platform for mobile apps and websites to collect in-the-moment user feedback. Measure NPS, CSAT, CES, and PMF scores and gather feature-specific user feedback to improve your product.

UserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!

Heeduser - Heeduser is the customer engagement platform that helps companies build better relationships with their customers and prospects, through the better online customer community

Userbrain - Easy, fast, and affordable user testing for websites and prototypes.

Kraftful Analytics - Kraftful is a product analytics platform for apps that control devices.

userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.