CSS frameworks

Full fledged: - Bootsrap - Foundation - PureCSS - Bulma - Semantic UI - Materialize

Lightweight: - UI kit - Milligram - Spectre

Minimal Bloilerplates: - Skeleton

Other: - AgnosticUI - Accessible CSS component primitives that work with React, Vue 3, Svelte, and Angular! - Tailwind - Primitive UI