Carrd - Simple, responsive one-page site creator.
Buefy - Lightweight UI components for Vue.js based on Bulma
Cargo - Cargo Collective is a web publishing platform that creates and offers accessible tools online.
Vuetify - Material Component Framework for VueJS 2
Responsivize - A must-have tool to develop responsive websites
Bootstrap Vue - Quickly integrate Bootstrap v4 components with Vue.js