GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
DevDojo - Dev tools and resources for building awesome stuff
MkDocs - Project documentation with Markdown.
UX Recipe - Checklist to discover your next UX project tools/techniques
Docusaurus - Easy to maintain open source documentation websites
UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.