Gitscout - A beautiful Github Issues experience for macOS
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
GitHub Reader - A quick way to browse GitHub issues and pull requests.
ClassVR - VR Training Simulator
Zokyo - GitHub Chrome Extension to track and manage issues
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs