Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
Tetrisly - Starter kit for design systems and wireframes builder (Sketch/Figma)
WING - A phone carrier that is actually nice to you.
Framer - 🔥 Design real websites right on the canvas.
Spectre.css - Lightweight, responsive and modern CSS framework for faster and extensible development.
Flawwwless ui - Simplified open source React.js components library 🚀