Stack Overflow Trends - Current programming and technology trends by Stack Overflow
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Answer Bot by Intercom - Instant resolutions, happier customers
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Stack Overflow for Teams - Everything you love about Stack Overflow in a private space.
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.