Vue.js
Progressive JavaScript framework. Evan You (ex-Google AngularJS team) released 2014. Single-file components (.vue), reactive data binding, lighter than React.
Vue 2 (2016) hit mainstream. Vue 3 (2020) total TypeScript rewrite with Composition API. Vue 3.4 (2024) added new signals-inspired refs. Strongest in China (Alibaba, ByteDance) but globally established. Official complements: Vue Router, Pinia (state, replaces Vuex), Nuxt (meta-framework like Next.js). Competitors: React (more mainstream), Svelte (more minimalist), Solid (more performant).