GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Developerhub.io - All-in-One Platform for Online Documentation
PortaCrypt - Create portable encrypted documents on your Mac
SassDoc - SassDoc is to Sass what JSDoc is to JavaScript: a documentation system to build pretty and powerful docs in the blink of an eye.
ReadMe - A collaborative developer hub for your API or code.
JSDoc - An API documentation generator for JavaScript.