MDB for Angular - Material Design + Angular done right
Tetrisly - Starter kit for design systems and wireframes builder (Sketch/Figma)
Invision - Prototyping and collaboration for design teams
Framer - 🔥 Design real websites right on the canvas.
Platforma for Android - The ultimate wireframe kit for your next android app
Flawwwless ui - Simplified open source React.js components library 🚀