Delighted - The fastest and easiest way to gather actionable feedback from your customers
Heurix.io - Heurix is a free heuristic evaluation tool that helps you work out how to improve your website.
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!
UX Companion - A handy glossary of UX theories, tools and principles (iOS)
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.
Heurio - Do website reviews faster. Heurio eliminates the administration process and lets you focus on creating value in a collaborative and user-friendly way. Perfect for heuristic evaluation, design and development review, bug report, QA testing and more.