Language frameworks are structured systems that help developers create applications using programming languages. They provide pre-written code, tools, and guidelines, making it easier to build software without starting from scratch. Examples of popular language frameworks include Django for Python and Ruby on Rails for Ruby. These frameworks streamline the development process by offering reusable components and best practices. This not only saves time but also enhances code quality and maintainability. By using a language framework, developers can focus on building features rather than dealing with repetitive tasks, leading to more efficient and effective software development.