Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
Documize - Enterprise-grade wiki and knowledge management platform
Folder Painter - Folder Painter is an easy to use Portable Freeware program, which allows you to change the color of the icon representing a chosen folder to any color you like
HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.
Folder Colorizer - Windows Explorer is too boring? Color it up!
ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.