Elements for Sketch - High-quality UI Kits in Sketch, for free
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
Sketch - Professional digital design for Mac.
DynaMaker - Cloud service for Visual Product Configuration with parametric geometry and CAD / BIM
Invision - Prototyping and collaboration for design teams