Web3 is an open source, decentralized platform that provides developers with the tools to build and deploy distributed applications. It uses a blockchain-based distributed ledger to ensure secure, transparent, and tamper-resistant transactions. Web3 also provides developers with the ability to create their own custom smart contracts, allowing them to build powerful applications on top of the Ethereum network.
Together, Node.js, React, and Web3 form a powerful software stack for building decentralized applications. Node.js provides the server-side environment for applications, React provides the user interface, and Web3 provides the blockchain infrastructure. This stack is perfect for building fast, secure, and interactive distributed applications.