HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
Dr.Explain - Dr.Explain software is a help file authoring tool.
Support Hero - Educate your customers through self-help support
MadCap Flare - Documentation for Any Audience, Language or Format
Apervita - Apervita is a self-service platform that allows health enterprises and professionals to author evidence-based insight and connect it to practice, anywhere.