51 Best JavaScript Libraries Every Developer Should Know

The ultimate lifesaving list of the JavaScript packages you should have to build apps and websites quickly and reliably.
Written by
Mantas Ciuksys
December 14, 2023
min. read

JavaScript - the language we've all grown to love and use daily. It's the unseen yet omnipresent force driving the web, from the simplest of websites to the most complex web applications. Yet, for all its widespread use and flexibility, one of the greatest challenges we face as developers is sifting through its vast, ever-expanding universe of packages. 

Finding those gems – the packages that truly make our coding lives easier, more efficient, and more enjoyable – can be a daunting task. This article aims to ease that journey by highlighting some of the best and most useful JavaScript packages that are well worth incorporating into your development toolkit.

1. Tatum

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2. Lodash

Lodash is the Swiss Army knife of JavaScript. Offering a plethora of utility functions for everyday programming tasks, it emphasizes a functional programming paradigm. Whether you're manipulating arrays, strings, objects, or numbers, Lodash has a function for that.

3. React

React has revolutionized the way we build user interfaces. It's a declarative, efficient, and flexible JavaScript library that's perfect for creating dynamic UIs, especially for data-heavy applications.

4. Moment.js

Handling dates and times in JavaScript can be a real headache. Moment.js comes to the rescue, making parsing, validating, manipulating, and displaying dates and times a breeze, not to mention handling those pesky time zones.

5. Mongoose

Mongoose is an elegant MongoDB object modeling tool for Node.js. It provides a straightforward, schema-based solution to model your application data and includes built-in type casting, validation, query building, and business logic hooks.

6. Jest

Testing is crucial, and Jest makes it delightful. This JavaScript Testing Framework focuses on simplicity and support for large-scale applications. It works out of the box, with minimal configuration, for most JavaScript projects.

7. Webpack

Webpack is a powerful static module bundler for modern JavaScript applications. It builds a dependency graph that maps every module your project needs and generates one or more bundles. It's a must-have for asset management, optimization, and transformation.

8. Axios

When it comes to making HTTP requests, Axios stands out. This promise-based client is great for fetching or saving data. Its ease of use and wide compatibility make it a favorite among developers.

9. Socket.io

For real-time communication, Socket.io is a game-changer. It enables bidirectional and event-based communication between web clients and servers. It’s perfect for building interactive applications, such as chat apps or live analytics.

npm install socket.io

10. Next.js

Next.js offers a seamless framework for building server-rendered React applications. It's a game-changer for SEO-friendly single-page applications.

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11. Angular

Angular is a platform and framework for building single-page client applications using HTML and TypeScript. “When you need your web development to be as robust as a superhero’s suit." 

npm install -g @angular/cli

12. Redux

Redux is a predictable state container for JavaScript apps, perfect for managing the state in a consistent way in large applications - for when you need that one single source of truth in your app. 

13. Vue.js

Vue.js is a progressive framework for building user interfaces, focusing on declarative rendering and component composition.

14. Nodemon

Nodemon is a utility that monitors changes in your source and automatically restarts your server. It’s pretty much impossible to work without it. 

15. Babel

Babel is a JavaScript compiler that lets you use next generation JavaScript, today.

16. TypeScript

TypeScript adds optional static typing to JavaScript, enhancing code quality and understandability.

17. GraphQL

GraphQL is a query language for APIs and a runtime for executing those queries by using a type system you define for your data.

18. Tailwind CSS

Tailwind CSS is a utility-first CSS framework for rapidly building custom designs. Essential for any website.

npm install tailwindcss

19. Electron

Electron lets you build cross-platform desktop apps with JavaScript, HTML, and CSS.

20. Puppeteer

Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium.

21. ESLint

ESLint statically analyzes your code to quickly find problems. Keep your code clean - your bugs in check. 

22. Svelte

Svelte is a radical new approach to building user interfaces, where the work happens at build time, not run time.

23. Yarn

Yarn is a fast, reliable, and secure dependency management tool. Pretty much an industry standard. 

npm install --global yarn

24. Parcel

Parcel is a web application bundler, differentiated by its developer experience. It offers blazing fast performance utilizing multi-core processing, and requires zero configuration.

25. D3.js

D3.js is a JavaScript library for producing dynamic, interactive data visualizations in web browsers. We love it! 

npm install d3

26. Three.js

Three.js is a cross-browser JavaScript library and API used to create and display animated 3D computer graphics in a web browser. For that next level of web development. 

27. Gatsby

Gatsby is a React-based, GraphQL powered, static site generator for building blazing fast websites. 

28. Chakra UI

Chakra UI is a simple, modular and accessible component library that gives you the building blocks to build your React applications.

29. Cypress

Cypress is a next generation front end testing tool built for the modern web. Please, use it if you actually want things to work. 

30. React Router

React Router is a collection of navigational components that compose declaratively with your application.

31. MobX

MobX is a simple, scalable state management solution. Give this one a test run to see what a lifesaver this can be. 

32. Vuetify

Vuetify is a Vue UI Library with beautifully handcrafted Material Components. When you need to handle Vue components. 

33. RxJS

RxJS is a library for reactive programming using Observables, to make it easier to compose asynchronous or callback-based code.

34. Zustand

Zustand is a small, fast and scalable bearbones state-management solution using simplified flux principles. “Managing state without the bloat" is the promise.

35. Ant Design

Ant Design is an enterprise-class UI design language and React UI library. For when you need that extra level of sophistication. 

36. Material-UI

Material-UI offers React components for faster and easier web development, following Material Design guidelines.

37. Formik

Formik is the world's most popular open source form library for React and React Native.

38. Firebase

Firebase provides a comprehensive suite of tools for building and managing powerful apps, offering real-time database, authentication, and more.

39. Styled-components

Styled-components allows you to write actual CSS code to style your components in React.

40. Prettier

Prettier is an opinionated code formatter that enforces a consistent style by parsing your code and reprinting it with its own rules. “because clean code is beautiful.”

41. Bootstrap

Bootstrap is the most popular HTML, CSS, and JS library for developing responsive, mobile first projects on the web.

42. Feathers

Feathers is a lightweight web-framework for creating real-time applications and REST APIs using JavaScript or TypeScript.

43. Strapi

Strapi is an open-source headless CMS, front-end agnostic and based on Node.js. It's perfect for managing content and making it available through a customizable API.

44. Quasar

Quasar is a high-performance, full-front-end stack that can build SPA, SSR, PWA, Mobile, and Electron apps, all from the same codebase.

45. Nuxt.js

Nuxt.js is an intuitive Vue framework that simplifies the development of universal or single page Vue apps.

46. VueX

VueX is a state management pattern + library for Vue.js applications. It serves as a centralized store for all the components in an application.

47. Storybook

Storybook is an open source tool for developing UI components in isolation for React, Vue, and Angular.

48. Apollo Client

Apollo Client is a comprehensive state management library for JavaScript that enables you to manage both local and remote data with GraphQL.

49. Sass

Sass is a preprocessor scripting language that is interpreted or compiled into Cascading Style Sheets (CSS).

50. GreenSock (GSAP)

GreenSock (GSAP) is a robust JavaScript toolset that turns developers into animation superheroes.

51. Express

Enter Express, the minimalist and flexible Node.js web application framework. It's the go-to for building robust web and mobile applications. Express streamlines the process, whether it's routing, middleware, or handling requests and responses.