UX Flow Wireframe Prototyping System - Create beautiful user flows prototypes for your next project
React Boilerplate - Offline-first, highly scalable foundation for your next app
draw.io - Online diagramming application
GatsbyJS - Blazing-fast static site generator for React
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.
Teutonic CSS - Here’s 12KB of CSS to jump start your HTML