UI Movement - The best UI design inspiration, daily
Dr.Explain - Dr.Explain software is a help file authoring tool.
UI Garage - Specific mobile and web design patterns for your inspiration
Adobe RoboHelp - Adobe RoboHelp empowers organizations to deliver engaging help and policy content across mobile devices, formats, and platforms.
Collect UI - Daily inspiration collected from #dailyui archive and beyond
MadCap Flare - Documentation for Any Audience, Language or Format