Front-end frameworks are pre-built collections of code that help developers create user interfaces for websites and applications more efficiently. They provide a structured way to build web pages, offering reusable components, styles, and tools that streamline the development process. Popular examples include React, Angular, and Vue.js. These frameworks enable developers to focus on building features rather than starting from scratch. They often come with built-in functionalities like routing and state management, making it easier to manage complex applications. By using a front-end framework, developers can ensure consistency and improve the overall user experience.