eXo Platform - Digital workplace solution
HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.
Confluence - Confluence is content collaboration software that changes how modern teams work
Dr.Explain - Dr.Explain software is a help file authoring tool.
Bloomfire - Let Bloomfire help you get organized! Organize your content, build your company knowledge base and help your employees to be more successful.
CHM Editor - Best solution to edit CHM files