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5 Libraries You Must Install in Your React Application (2026)

Every time I start a new React project, I realize there are a few libraries I install almost by muscle memory. They make my workflow faster, my code cleaner, and my life a bit easier.

Here are the ones that, in my opinion, deserve a spot in your package.json in 2026.


1. 🪝 usehooks-ts

📦 npm install usehooks-ts

This one’s a small gem. It’s a collection of reusable hooks — useLocalStorage, useDarkMode, useMediaQuery, and many more.

Instead of re-writing the same logic over and over, I just grab what I need from this package. It keeps my components simple and predictable.

🧠 Great for: Developers who love clean and reusable code.


2. 📋 React Hook Form

📦 npm install react-hook-form

Still one of the best ways to handle forms in React. It’s lightweight, fast, and plays nicely with any UI library you prefer.

Validation, nested inputs, performance — it handles them all elegantly.

💡 Pro tip: Combine it with Zod for type-safe validation.


3. ⏰ Day.js

📦 npm install dayjs

Moment.js used to be the go-to for date manipulation, but it’s 2026 — and dayjs is the modern choice.

Same syntax, way smaller size, and just works.

🕒 Quick example:

import dayjs from "dayjs";

console.log(dayjs().format("DD MMM YYYY")); // 👉 04 Nov 2026
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4. 🎨 Radix UI

📦 npm install @radix-ui/react-*

Radix gives you accessible, unstyled components that you can customize however you want — perfect if you’re using Tailwind or building your own design system.

It handles all the hard parts (focus, keyboard navigation, ARIA roles), so you can just focus on the visuals.

🧩 Examples: Dialog, Tooltip, Dropdown, Switch, and more.


5. ⚡ Socket.IO + socket.io-react-hook

📦 npm install socket.io-client socket.io-react-hook

When you need real-time features — like live chat, AI conversation streaming (LLM), notifications, or user presence — Socket.IO remains one of the most reliable tools out there.

Combine it with socket.io-react-hook to make your socket logic much cleaner and React-friendly.

🔥 Example:

import { useSocket } from "socket.io-react-hook";

const { socket, error } = useSocket("https://your-server.com");

// Example: sending user message to LLM or chat endpoint
socket.emit("user_message", { prompt: "Hello AI!", model: "gemini-1.5-pro" });
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🧠 Perfect for: apps that use real-time AI chat, collaborative dashboards, or notification systems.


6. 🤔 Your Pick

Okay, I’ll leave the sixth one to you.

What’s a library you always install in every React project — the one you can’t live without?

💬 Drop it in the comments! I’d love to see what everyone else considers essential in 2026.


🧭 Closing Thoughts

These five (plus your favorite) are the backbone of almost every React app I’ve built lately.

They make the setup smoother, the code cleaner, and the development process just… nicer.

If you enjoyed this post, leave a ❤️ and follow me — I share stuff like this pretty often.

Top comments (4)

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andrewbaisden profile image
Andrew Baisden

Used most of these in projects already. I will say that TanStack Form is rising as a good alternative to React Hook Form though.

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ihda06 profile image
ihda06

Haha good point! I thought you meant TanStack Query for a second — can’t believe I forgot to add that one 😭 thanks for the reminder!

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atinypixel profile image
Aziz Kaukawala • Edited

I've many including few of the above 😬:

  • Tanstack Query
  • Axios
  • clsx
  • tailwind-merge
  • immer
  • tiny-invariant
  • react-hot-toast
  • react-icons
  • lodash (only for few methods as now native APIs are much more efficient)
  • zod/yup
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ddfridley profile image
David

Maybe this is our of scope for the topic but Storybook.js is in all my projects so components can be built and tested individually. And as I do more with AI agents the tests are even more valuable.