Top REACT GitHub Repositories & Tools (2026)

The Zoo Design Studio app.

Self-hosted geospatial data catalog with semantic search (pgvector), OGC/STAC APIs, and map builder. Built on FastAPI, PostGIS, React, and MapLibre.

Free and open-source animated SVG icons for React, built for smooth micro-interactions, easy customization, and lightweight performance.

Build a system, load it until it breaks, and watch why. A system design simulator for learning distributed systems.

HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support

Zero-cost & Type-safe Reactive Extensions for Rust. Supports both high-performance single-threaded (Local) and thread-safe (Shared) contexts. WASM & Tokio ready.

Yet another awesome browser extension for switching search engines, search everything (selection text / image / link / find in page) on any engine with a simple right click or a variety of menus and shortcuts. Build with React & Material-UI. (WIP).

A networking framework that evolves with your application

Open-source design-method engine for Claude Code, Codex & Cursor. 23 agent skills for fixed design judgment, multiple grammars, semantic palettes, reference compilation, and evidence-verified UI. MIT.

An Intuitive Event-Driven Reactive Programming Library for Java

Batteries-included backend that works with any stack.

A simple app for tracking monthly spending and working towards financial goals.

Add image annotation functionality to any web page with a few lines of JavaScript.

A set of React components for the PatternFly project.

Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching, 293 guided cases. 120,000+ priced positions, 45 languages, 192 modules. AGPL-3.0. pip install openconstructionerp

React component for an input field

Quick, painless, intuitive OCR platform written in Rust and TypeScript. Modern UI with modern API, with an emphasis on intuitive user experience.

#1 Self hosted CMMS web & mobile application that allows you to manage enterprise maintenance for free - Computerized Maintenance Management System

$mol - fastest reactive micro-modular compact flexible lazy ui web framework.

Enables organizations to create and deploy customizable AI agents with support for multiple LLM providers, real-time chat, voice, document training, analytics, user management, SSO authentication, and embeddable widgets. Built with React 19, Redux Toolkit, Radix UI, and Tailwind CSS.