HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
SkipFlag - AI knowledge base that builds itself from your communication
UserTest.io - User testing made simple. High-quality, affordable user testing solutions from real users, here in the UK. Improve your usability!
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.