Dr.Explain - Dr.Explain software is a help file authoring tool.
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
MadCap Flare - Documentation for Any Audience, Language or Format
ClassVR - VR Training Simulator
HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs