15 Most Popular Websites Built With ReactJS

React has revolutionized how we build modern web applications, and the proof lies in the incredible websites built with ReactJS. From social media giants to streaming platforms, the most popular websites built with ReactJS demonstrate why this technology has become the go-to choice for developers worldwide. Today, React powers over 14 million applications across the globe, including some of the biggest and most influential tech giants. Exploring these leading websites built with ReactJS gives valuable insights into how this framework drives scalability, performance, and seamless user experiences.

If you’re considering React JS development for your next project, these real-world examples will provide valuable insights into React’s capabilities and potential for your business.

Whether you’re a developer seeking inspiration, a business leader evaluating technology choices, or simply curious about the websites built with React, this comprehensive guide reveals 15 industry-leading platforms that showcase React’s capabilities. You’ll discover why companies like Facebook, Netflix, and Instagram chose React, and how this decision shaped their success in delivering exceptional user experiences.

What is ReactJS?

ReactJS is a popular open-source JavaScript library for building user interfaces. Created by Facebook (now Meta) and maintained by a vast community, React helps developers build complex, interactive UIs by breaking them into smaller, reusable components.Its component-based architecture, Virtual DOM, and unidirectional data flow make it ideal for scalable, high-performance applications. React also integrates easily with tools like Next.js, Redux, and GraphQL — making it one of the most versatile choices for web development.

Why React Dominates Modern Web Development

What Makes React Ideal for Large-Scale Websites

React’s Virtual DOM enables lightning-fast updates by re-rendering only components that change — rather than entire pages. This efficiency is critical for apps handling millions of daily users, such as Facebook or Netflix.

The component-based architecture also allows teams to reuse UI elements, accelerating development and ensuring consistency. Companies like Instagram scaled quickly thanks to React’s modular design, sharing components across multiple features and platforms.

React’s unidirectional data flow makes debugging and testing predictable — a key advantage for enterprise apps managing large amounts of user data.

React’s Popularity in 2025

According to the Stack Overflow Developer Survey 2024, React remains one of the most used and loved web technologies.
As of 2025, the official React repository has ~240k GitHub stars and hundreds of active contributors (GitHub).

⚠️ Note: Many performance or percentage claims (like “30% faster than Angular”) are unverified across benchmarks — performance depends heavily on architecture, not the framework itself.

React’s large ecosystem (Next.js, Remix, Gatsby) and support for server-side rendering (SSR) make it a favorite for SEO-friendly and content-heavy applications.

Discover the Advantages of Implementing React JS in Your Development

When it comes to front-end development, React JS is one of the most popular frameworks. And for a good reason! React JS has several benefits that make it appealing to developers. Here are just a few of the Benefits of Using React JS:

1. Component-Based

React is a component-based framework, which means that developers can build reusable components that can be used throughout an application. Code becomes more modular and simpler to maintain as a result.

2. Declarative

React is declarative, meaning that code is written in a way that is easy to read and understand. This makes development faster and simpler since developers don’t have to spend time deciphering complex code.

3. Virtual DOM

React uses a virtual DOM, which means that it only updates the components that need to be updated rather than re-rendering the entire page. This makes applications more responsive and fast.

4. JSX Support

JSX is a syntax extension for JavaScript that allows you to write HTML directly in your JavaScript code. This makes development with React more convenient, as you don’t have to switch between files when working on markup and logic.

ALSO READ: ReactJS vs React Native

Popular Websites Built With ReactJS You Use Every Day

Facebook – The Birthplace of React

Facebook deserves the spotlight as the most famous React website since Meta (formerly Facebook) created React in 2011. The platform serves over 3 billion users globally, making it one of the largest React applications ever built. Facebook’s news feed, messaging system, and complex interaction features all leverage React’s component-based architecture.

What makes Facebook’s React implementation remarkable is how they handle real-time updates across millions of simultaneous users. The Virtual DOM ensures that when you receive a new message or see a friend’s post, only the necessary parts of the interface update, maintaining smooth performance even during peak usage times.

Facebook’s success with React directly influenced their decision to open-source the library, recognizing that community contributions would accelerate development while benefiting the entire web development ecosystem.

Instagram – Visual Storytelling Powered by React

Instagram leverages React for its web interface and React Native for its mobile app, ensuring seamless performance across platforms. With over 2 billion monthly active users, Instagram handles massive media workloads — from stories and reels to photo feeds and direct messages — all powered by React’s efficient rendering engine.

React’s Virtual DOM enables smooth transitions between stories, rapid feed updates, and instant likes or comments without reloading the page. This responsive design is critical for a visual-first platform where engagement depends on uninterrupted user experience.

Instagram’s integration within Meta’s ecosystem also demonstrates how React components can be shared across multiple applications, enabling faster development cycles and consistent UI patterns across Facebook, Messenger, and Instagram.

Netflix – Streaming Excellence Through React

Netflix uses React to power its fast, dynamic user interfaces across multiple devices. From personalized recommendations to playback controls and movie browsing, React helps Netflix deliver a highly responsive experience to over 300 million global users.

React’s component-based architecture allows Netflix engineers to manage large, frequently updated libraries of content efficiently. It ensures UI consistency and fast rendering of new data — critical for users browsing thousands of titles every second.

According to the Netflix Engineering team, React’s performance optimizations and reusable UI components were key factors in enabling faster experimentation, smoother user interactions, and improved streaming experiences worldwide.

Spotify – Music Discovery Made Interactive

Spotify’s web player interface is built with React, enabling real-time music playback, playlist management, and social features. The platform serves millions of concurrent users daily, and React helps maintain a snappy, fluid interface even during heavy load.

React’s modular architecture allows Spotify to reuse UI components across playlists, albums, and artist pages, providing visual consistency while minimizing code redundancy. The result: faster feature rollouts and a cohesive design language that enhances music discovery.

Spotify’s use of React also supports interactive elements like real-time lyrics, collaborative playlists, and instant queue updates — showcasing React’s power in managing stateful, media-rich applications.

Shopify – Empowering E-commerce with React

Shopify, one of the world’s leading e-commerce platforms, has deeply integrated React into its ecosystem. Its Polaris design system and Hydrogen framework (for headless commerce) are built entirely with React, enabling merchants to create modern, high-performance online stores.

React helps Shopify deliver fast, responsive interfaces for both merchants and buyers — from managing inventory in the admin dashboard to browsing products on storefronts. The modular nature of React components allows Shopify developers to innovate quickly while maintaining design consistency across millions of stores.

React’s scalability ensures that even during high-traffic sales events, Shopify stores remain stable and responsive — a testament to React’s reliability in enterprise-scale applications.

Walmart – Large-Scale Retail Powered by React

Walmart, one of the world’s largest retailers, uses React extensively across its front-end systems and internal dashboards. The framework powers critical parts of Walmart’s online shopping experience, ensuring smooth navigation, fast page loads, and responsive product searches across devices.

React’s performance optimizations enable Walmart to handle massive traffic spikes — especially during peak events like Black Friday — without compromising user experience. Internally, Walmart’s teams also use React-based dashboards for analytics and operations, taking advantage of the framework’s modular and scalable architecture.

React’s ability to integrate with other enterprise technologies has helped Walmart modernize its digital infrastructure while maintaining performance at a global scale.

Slack – Real-Time Collaboration with React

Slack uses React to power its web application interface and real-time chat features. With millions of active teams relying on instant communication, React’s fast rendering ensures smooth message updates, channel navigation, and notifications without delay.

React’s component-driven approach simplifies Slack’s complex interface, managing conversations, threads, files, and integrations seamlessly. The framework’s efficient state management allows Slack to deliver real-time synchronization across web and desktop apps, creating a unified experience for users switching between devices.

React also enables Slack’s engineering teams to iterate quickly — adding new collaboration features while preserving speed and reliability.

Trello – Simplicity Through React’s Flexibility

Trello relies on React for its dynamic, drag-and-drop project management boards. React’s declarative nature makes it easy to manage the real-time updates users expect when organizing tasks, moving cards, or collaborating with teammates.

Each Trello card and list functions as a reusable React component, making the interface both scalable and modular. This architecture helps Trello maintain consistent performance even as users manage large, complex boards with hundreds of tasks.

React’s predictability and speed play a key role in Trello’s hallmark simplicity — enabling smooth collaboration without the lag or instability typical of traditional JavaScript-heavy apps.

Discord – Gaming Communication at Scale

Discord’s web client is built using React, supporting millions of users engaging in voice, video, and text communication simultaneously. The platform’s low-latency design depends on React’s ability to efficiently manage UI updates in real time.

From message threads to live voice channels, React handles Discord’s complex, multi-layered state management seamlessly. The framework enables real-time rendering of new messages, notifications, and active user lists — critical for gaming communities that rely on instant feedback.

React’s modular approach also makes it easier for Discord’s developers to roll out new features while maintaining stability, scalability, and consistent UI behavior across web and desktop versions.

Reddit – A Modern Redesign with React

Reddit underwent a major redesign in 2018, migrating its entire web interface to React. This shift allowed Reddit to modernize its user experience, enabling faster browsing, smoother comment rendering, and improved responsiveness across devices.

React’s Virtual DOM significantly enhanced Reddit’s ability to manage thousands of posts, comments, and upvotes updating in real time. Each subreddit, post, and comment thread functions as an independent React component, making the UI highly modular and maintainable.

By using React, Reddit achieved a faster, more interactive platform that supports complex community features while remaining lightweight and scalable.

Asana – Productivity Perfected with React

Asana’s entire web interface and interactive dashboards are built with React, enabling seamless task management, timeline visualization, and team collaboration. React allows Asana to deliver real-time project updates and maintain synchronization across distributed teams.

The platform’s highly interactive UI — including drag-and-drop tasks, instant status changes, and live activity feeds — showcases React’s strength in managing complex, data-driven interfaces.

React’s reusability and efficiency make it easier for Asana’s developers to innovate quickly, ensuring that the product evolves continuously without compromising performance.

Pinterest – Visual Discovery Reinvented

Pinterest has gradually migrated major UI surfaces to React to enhance performance and scalability. As a visual discovery platform handling billions of images, Pinterest requires smooth, fast loading and real-time interactivity — both of which React delivers exceptionally well.

React’s Virtual DOM helps Pinterest maintain smooth scrolling, instant pin saves, and fast updates when users interact with boards or search results. The modular component design also improves maintainability and consistency across web and mobile interfaces.

By adopting React, Pinterest has significantly improved page load times, reduced development complexity, and built a stronger foundation for future growth.

Why These Companies Chose React Over Alternatives

Performance Benefits That Scale

Why use React for websites becomes clear when examining these success stories. React’s Virtual DOM technology provides significant performance advantages that become more pronounced as applications scale. Companies like Netflix and Facebook require lightning-fast interactions with millions of users, and React’s efficient rendering system delivers the responsiveness users expect.

The component-based architecture also enables better code organization and maintenance, crucial for large development teams working on complex applications. When teams can reuse components across different features, development velocity increases while bug rates decrease.

Developer Experience and Ecosystem

React’s extensive ecosystem, including tools like Next.js, Redux, and React Native, provides companies with comprehensive solutions for web and mobile development. This ecosystem maturity reduces development time and costs while ensuring access to ongoing support and updates.

The large community of React developers also makes hiring and training more manageable for companies scaling their development teams. Stack Overflow surveys consistently rank React among the most loved frameworks, indicating strong developer satisfaction. For companies looking to expand their development capabilities, options to hire React Native app developers or React specialists have become increasingly accessible due to the framework’s popularity.

Future-Proofing Technology Decisions

React’s backing by Meta and continuous evolution ensure long-term viability for enterprise applications. Regular updates and backward compatibility mean companies can invest in React without fear of technology obsolescence.

The framework’s adoption by industry leaders also creates a network effect where best practices, tools, and solutions continuously improve through community contributions and corporate investment.

Key Takeaways for Your Next React Project

When React is the Right Choice

React excels in applications requiring:

• Complex user interfaces with frequent updates
• High-performance requirements at scale
• Real-time features like messaging or live data
• Mobile and web platform integration through comprehensive mobile application development
• Large development team collaboration

Consider React when building social platforms, e-commerce sites, productivity tools, or any application where user experience directly impacts business success. For additional insights on React implementation, the React community documentation provides extensive resources and best practices.

Getting Started with React Development

Begin your React journey by studying the best React applications mentioned in this guide. Each platform offers unique implementation approaches that can inspire your own development decisions. Focus on understanding component architecture, state management, and performance optimization techniques used by successful React applications.

For additional learning resources, the MDN Web Docs on React provides comprehensive tutorials for developers at all levels.

Remember that choosing React means joining a thriving ecosystem of developers, tools, and resources that continue to push web development forward. The examples in this guide prove that React can handle any scale of application while delivering exceptional user experiences.

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