Vue.js hit 6.4 million weekly npm downloads recently. The framework itself is solid. But the tools around it are what make you productive.
Whether you're starting a new project or maintaining an existing one, the right set of libraries saves you hours of boilerplate and headaches. I've put together 7 tools that cover the full Vue developer workflow, from building and state management to testing and styling.
Vue PDF Viewer: Flexible and Powerful Vue.js PDF Component
Just a quick background about what I'm working on. Vue PDF Viewer renders the PDF viewer on your Vue or Nuxt websites so that your users can interact with your PDF document without leaving your sites. The component has over 20 features including theme and toolbar customization, annotation tools (text selection, free text, image overlay), web responsive and more.
I'd love for you to check Vue PDF Viewer out! Your support means the world and helps me create more awesome content like this. ❤️
1. Vite
If you're starting a Vue project in 2026 and not using Vite, you're making your life harder than it needs to be.
Vite is the build tool created by Evan You (the same person behind Vue.js). It uses native ES modules during development, which means your dev server starts almost instantly, no matter how big your project gets. Hot Module Replacement (HMR) updates your changes in the browser in milliseconds, not seconds.
The latest version, Vite 8, ships with a Rust-powered toolchain under the hood. The build step uses Rolldown for bundling, which is significantly faster than the previous Rollup-based setup. VoidZero, Evan You's company, also announced Vite+, an all-in-one CLI that bundles Vite's dev server with Vitest for testing and Oxlint for linting.
npm create vite@latest my-vue-app -- --template vue-ts
As of April 2026, Vite has over 79,000 GitHub stars and is used by Vue, Nuxt, Svelte, React, and many other frameworks.
Who is it for: Every Vue developer. It's the default when you scaffold with create-vue.
Learn more on https://vite.dev/
2. Pinia
Pinia is Vue's official state management library. It replaced Vuex, which is now in maintenance mode.
The biggest difference? No more mutations. With Pinia, you modify state directly inside actions. This cuts a lot of the ceremony that made Vuex feel heavy. The API is cleaner, TypeScript support is first-class, and the whole thing weighs about 1.5kb.
import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
export const useCartStore = defineStore('cart', () => {
const items = ref([])
const total = computed(() =>
items.value.reduce((sum, item) => sum + item.price, 0)
)
function addItem(item) {
items.value.push(item)
}
return { items, total, addItem }
})
Notice how that looks like a regular Vue composable? That's the point. Pinia uses the Composition API style you already know. No new patterns to learn.
As of 2026, Pinia has over 14,500 GitHub stars and around 2.5 million weekly downloads. The Vue DevTools extension supports it natively, so you get full state inspection and time-travel debugging out of the box.
Who is it for: Any app that shares state across multiple components. If you're still using Vuex, the migration is well-documented and usually straightforward.
Learn more on https://pinia.vuejs.org/
3. VueUse
VueUse is a collection of over 200 composition utility functions for Vue 3. It's basically lodash for the Composition API era.
Instead of writing your own useLocalStorage, useDarkMode, or useClipboard from scratch, you just import them from VueUse. Each function is tree-shakable, so you only ship what you use.
import { useClipboard, useLocalStorage, usePreferredDark } from '@vueuse/core'
// Copy text to clipboard
const { copy, copied } = useClipboard()
// Persist state in localStorage
const settings = useLocalStorage('app-settings', {
theme: 'light',
language: 'en',
})
// Detect if user prefers dark mode
const isDark = usePreferredDark()
That's three features you'd normally spend an afternoon writing. VueUse handles edge cases, SSR compatibility, and cleanup for you.
The library also covers browser APIs (geolocation, intersection observer, network status), sensors (mouse position, scroll), animations, and even Firebase and RxJS integrations through add-on packages.
As of 2026, VueUse has over 22,000 GitHub stars and 15.7 million total downloads. It requires Vue 3.5+ starting from version 14.
Who is it for: Any Vue 3 developer who writes composables. Once you start using it, you'll wonder how you built apps without it.
Learn more on https://vueuse.org/
4. Vue Router
Vue Router is the official routing library for Vue.js. If your app has more than one page, you need it.
It handles client-side navigation in single-page applications without full page reloads. The feature set goes beyond basic routing. You get dynamic route matching, lazy-loaded route components, navigation guards for authentication checks, and scroll behavior control.
import { createRouter, createWebHistory } from 'vue-router'
const router = createRouter({
history: createWebHistory(),
routes: [
{
path: '/dashboard',
component: () => import('./views/Dashboard.vue'), // lazy loaded
meta: { requiresAuth: true },
},
],
})
// Navigation guard
router.beforeEach((to) => {
if (to.meta.requiresAuth && !isAuthenticated()) {
return '/login'
}
})
Lazy loading route components with dynamic imports keeps your initial bundle small. Users only download the code for the page they're visiting.
Vue Router has over 4,600 GitHub stars and is maintained by the Vue core team. It integrates with Vue DevTools for route debugging.
Who is it for: Any Vue app with multiple views or pages. It's part of the official Vue ecosystem and works with both Vue 3 and Nuxt.
Learn more on https://router.vuejs.org/
5. Vitest
Vitest is a testing framework built on top of Vite. The key advantage: it shares your Vite config. You don't need a separate Babel setup or duplicate configuration to make your tests understand your app's imports and aliases.
If you've used Jest before, the API will feel familiar. Vitest supports describe, it, expect, mocking, spies, snapshots, and code coverage. The difference is speed. Since it reuses Vite's transform pipeline, tests run significantly faster, especially on large projects.
import { describe, it, expect } from 'vitest'
import { mount } from '@vue/test-utils'
import MyComponent from './MyComponent.vue'
describe('MyComponent', () => {
it('renders a greeting', () => {
const wrapper = mount(MyComponent, {
props: { name: 'Vue' },
})
expect(wrapper.text()).toContain('Hello, Vue')
})
})
Vitest 4 shipped in early 2026. It includes browser mode for running component tests in a real browser, which catches issues that JSDOM-based tests miss. Nuxt Test Utils v4 now requires Vitest v4 as well.
As of 2026, Vitest has over 16,000 GitHub stars. The latest version is 4.1.x.
Who is it for: Vue developers who want fast, zero-config testing that stays in sync with their Vite build setup. If you're starting a new project, pick Vitest over Jest.
Learn more on https://vitest.dev/
6. VeeValidate
Forms are boring to build and painful to validate. VeeValidate takes that pain away.
It's the most popular form validation library in the Vue ecosystem. You get value tracking, validation, error handling, and submission management through a clean Composition API. It works with Yup, Zod, and Valibot for schema-based validation, or you can write simple validation functions yourself.
<script setup>
import { useForm } from 'vee-validate'
import * as zod from 'zod'
import { toTypedSchema } from '@vee-validate/zod'
const { defineField, handleSubmit, errors } = useForm({
validationSchema: toTypedSchema(
zod.object({
email: zod.string().email(),
password: zod.string().min(8),
})
),
})
const [email, emailAttrs] = defineField('email')
const [password, passwordAttrs] = defineField('password')
const onSubmit = handleSubmit((values) => {
console.log(values) // { email: '...', password: '...' }
})
</script>
The defineField composable gives you two-way binding and attribute handling in one call. No manual v-model wiring, no custom error display logic. VeeValidate also integrates with Vue DevTools, which makes debugging forms much easier than the usual "why won't this submit?" guessing game.
v5 is now in beta with first-class Standard Schema support, meaning Zod, Valibot, and Yup work without separate companion packages.
As of 2026, VeeValidate has over 11,000 GitHub stars. It also has an official Nuxt module (@vee-validate/nuxt) for auto-imports.
Who is it for: Any Vue app with forms. Login pages, checkout flows, settings panels, multi-step wizards. If you're hand-rolling validation logic with watch and ref, VeeValidate will save you a lot of code.
Learn more on https://vee-validate.logaretm.com/v4/
7. UnoCSS
UnoCSS is an on-demand atomic CSS engine created by Anthony Fu (the same person behind VueUse and Slidev). It's not a CSS framework. It's an engine that generates utility classes at build time, only for the ones you actually use.
The default preset understands Tailwind CSS, Windi CSS, Bootstrap, and Tachyons utility syntax out of the box. So ml-3, ms-2, ma4, and mt-10px all work without any configuration. You can also define your own custom rules with a few lines of config.
// uno.config.ts
import { defineConfig, presetUno, presetIcons } from 'unocss'
export default defineConfig({
presets: [
presetUno(),
presetIcons(), // use any icon as a CSS class
],
shortcuts: {
'btn': 'py-2 px-4 font-semibold rounded-lg shadow-md',
'btn-primary': 'btn text-white bg-blue-500 hover:bg-blue-700',
},
})
<template>
<button class="btn-primary">
<span class="i-carbon-send mr-2" /> Submit
</button>
</template>
That i-carbon-send is a pure CSS icon from the Carbon icon set, loaded on demand. No icon font, no SVG imports. UnoCSS's icon preset supports over 200,000 icons from Iconify.
What makes UnoCSS stand out from Tailwind is speed and flexibility. It scans your .vue, .tsx, and .html files at build time and generates only the CSS you use. No purging step needed. The Vite plugin includes a dev inspector at /__unocss where you can view, test, and debug your utility rules in real time.
UnoCSS has over 17,000 GitHub stars and first-class support for Vite, Nuxt, Astro, and Webpack.
Who is it for: Vue developers who want utility-first CSS with full control over the rules. If you like Tailwind but want something faster, more extensible, or less opinionated, give UnoCSS a try.
Learn more on https://unocss.dev/
Quick Recap
Here's the full list at a glance:
| Tool | Category | Why You Need It |
|---|---|---|
| Vite | Build tool | Fast dev server, instant HMR, Rust-powered builds |
| Pinia | State management | Clean API, no mutations, 1.5kb |
| VueUse | Composition utilities | 200+ ready-made composables |
| Vue Router | Routing | Lazy loading, guards, scroll behavior |
| Vitest | Testing | Shares Vite config, Jest-compatible, fast |
| VeeValidate | Form validation | Schema-based validation, DevTools support |
| UnoCSS | Atomic CSS engine | On-demand utility CSS, 200k+ icons, custom rules in minutes |
Each tool fills a different gap in the Vue development workflow. You don't need all seven on every project, but knowing they exist saves you from reinventing the wheel when the need comes up.
And if you're using or come across other useful or interesting tools for Vue, I’d love to hear about them. Just drop a comment and share what’s working for you!
Vue PDF Viewer: A PDF Viewer Made for Vue.js Developers 🚀
If you enjoyed this article, I encourage you to check out Vue PDF. It gives your Vue app PDF viewing with built-in annotation tools (text selection, free text, image overlay), form filling, search, and print support. It works with Vue 3, Composition API, TypeScript, and Nuxt. With developer-friendly APIs and a quick-start toolkit, you can go from install to a working PDF viewer in minutes.
Your support keeps me motivated to share more insights and build tools for the developer community. Thank you! 🙏
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