Node.js is an open-source JavaScript runtime that has gained popularity for its ability to build scalable and high-performance applications. As the demand for Node.js continues to grow, choosing the right Node.js framework has become crucial for developers. Node.js is a popular server-side JavaScript runtime environment that enables the development of scalable and high-performance applications. Major companies such as PayPal, Netflix, Walmart, and Uber use Node.js for their applications.