The Top 10 Render Open Source Projects

Easily display interactive 3D models on the web and in AR!

React is an open-source JavaScript library for building user interfaces with reusable components, declarative rendering, and a unidirectional data flow. You compose UI from components, keep UI output tied to state, and let React reconcile updates efficiently.

You can use React for single-page applications, progressively enhanced server-rendered pages, design systems, and interactive dashboard surfaces. You also get a clear upgrade path across rendering modes through the official docs at react.dev, core source at github.com/facebook/react, and community discussion at React Discussions.

Fast math typesetting for the web.

Liquid markup language. Safe, customer facing template language for flexible web apps.

A lightweight state management library for React that replaces heavyweight solutions like Redux with a minimal, hook-based API. Built on Zustand's bear-themed simplicity, it lets you create global stores with almost no boilerplate and consume them directly in components without providers. Ideal for developers who want predictable shared state without the ceremony.

• Key strength: Extremely small API surface — stores are plain functions, and components subscribe only to the slices they need, avoiding unnecessary re-renders.
• Caveat: Lacks built-in structure for large, complex state trees, which can lead to disorganized stores in bigger applications without disciplined conventions.

🧙 Valtio makes proxy-state simple for React and Vanilla

Simple reusable React error boundary component

The fast, flexible, and elegant library for parsing and manipulating HTML and XML.

A comprehensive collection of React hooks that covers sensors, UI state, animations, side effects, and more — giving developers building blocks to handle common browser and app logic without writing them from scratch. Ideal for teams who want utility-first abstractions over raw hook composition.

• Key strength: Covers an unusually broad surface area — from useBattery to useLocalStorage — reducing the need for multiple specialized libraries.
• Caveat: The sheer number of hooks means quality and maintenance vary across the collection; some utilities are thin wrappers with limited real-world utility.

why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)