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
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.