HelpCenter.io - Empower your customers for self-service and lower your customer support costs with a customer-centric and smart knowledge base.
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!
Support Hero - Educate your customers through self-help support
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.