Solvvy - Highly intelligent customer support self-service solution via AI/ML/NLP science
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Whatfix - Whatfix Enterprise: Enhancing self-service capability of any web product
Nintex - Cloud-based digital workflow management automation platform
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.