npm (short for Node Package Manager) is a package manager for the JavaScript programming language. It is the default package manager for Node.js, a runtime environment for executing JavaScript code outside of a web browser. npm allows developers to easily share and reuse code, by providing a centralized repository of open-source libraries and tools that can be easily installed and integrated into their projects.

npm is used to manage dependencies for Node.js projects, and it can also be used to manage dependencies for front-end web development projects using tools like React, Angular, or Vue. With npm, developers can quickly and easily install, update, and remove packages, as well as manage version conflicts between different dependencies.

npm is a command-line tool, and it comes bundled with Node.js, which means that it is installed automatically when you install Node.js on your computer. The npm command can be used to install, update, and manage packages, as well as to publish your own packages to the npm registry