Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Vue.js is an open-source model–view–viewmodel JavaScript framework for building user interfaces and single-page applications.