WP Curve - Unlimited WordPress support & small jobs, 24/7
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Upwork - Forget the old rules. You can have the best people. Right now. Right here.
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Support Hero - Educate your customers through self-help support
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.