MeteorJS is a full-stack JavaScript framework that simplifies web development by providing an integrated set of tools and libraries. With MeteorJS, developers can build modern web applications using a single codebase for both the client and server. It offers features like real-time data synchronization, automatic client-server communication, and hot code reloading. MeteorJS also includes a built-in package manager and a vibrant ecosystem of community-contributed packages. Its simplicity and ease of use make MeteorJS a popular choice for developing scalable, reactive, and real-time web applications.