Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
SDL Trados Studio - SDL Trados Studio is the complete translation environment for language professionals who want to edit, review and manage translation projects.
ClassVR - VR Training Simulator
HostMyDocs - Self hosting any HTML documentation
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.