Flowbite

CSSnippets helps you explore a vast collection of HTML, React, CSS and Tailwind CSS code snippets for buttons, box-shadows, cards, checkboxes, dropdowns and many more.

Bit: Provides a huge library of reuseable UI Components for React, Angular, Vue, React Native. Also can be used for sharing UI Components among other team members.

UILang is a minimal, UI-focused programming language for web designers.