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.
HelpSmith - HelpSmith is a help authoring tool to create CHM HTML help files, manuals, and PDF documents.
ClassVR - VR Training Simulator
MadCap Flare - Documentation for Any Audience, Language or Format
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs