Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
CSS Wand - Easy copy-paste beautiful CSS animations
Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
App Animations - Gallery of beautiful iOS animations to inspire your next app
Platforma - Wireframe library of layouts and UI elements
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.