ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs
Documize - Enterprise-grade wiki and knowledge management platform
Poka.io - Communication and training solutions for manufacturers.
HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.
REWO - REWO is a knowledge documentation and distribution solution, which drastically improves capturing, visualizing and communicating knowledge.
ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.