fullcalendar/fullcalendar-vue2

Vue 2, also known as Vue.js 2, is the earlier major version of the Vue JavaScript framework, hosted at vuejs/vue on GitHub with 210,235 stars and 33,778 forks under an MIT license. Per the repository's own README, Vue 2 hit End of Life on December 31, 2023, is no longer actively maintained, and the project now directs users toward vuejs/core (Vue 3) and an official migration guide, while leaving Vue 2 itself installable through CDNs, package managers, and GitHub.

Storybook is a frontend workshop maintained at storybookjs/storybook, with 90,840 stars and 10,387 forks on GitHub. It renders UI components and pages in isolation from your main application. Core renderers include React, Angular, Vue 3, Web Components, HTML, Ember, Svelte, and Preact, plus React Native and community support for Qwik and SolidJS. It's released under the MIT license.

vue-element-admin is a Vue and Element UI template for admin dashboards maintained by PanJiaChen, with 90,211 stars and 30,362 forks on GitHub. It ships permission-based routing, multi-environment build scripts, and pre-integrated editors and Excel tooling, demoed against Mock.js data instead of a real backend, and it's released under the MIT license.

Nuxt is the full-stack Vue framework — an open-source layer on top of Vue.js that gives you server-side rendering, static site generation, and file-based routing without wiring it all up yourself. It's written in TypeScript, works across Node, static hosting, and the edge, and leans on a large module ecosystem to fill in the gaps.