MooTools
MooTools is a compact, modular, object-oriented JavaScript framework that aims to make JavaScript development more efficient and enjoyable. It was created by Valerio Proietti and released in 2006. MooTools is known for its clean, readable syntax and its extensive set of built-in utilities, which include functions for DOM manipulation, event handling, and AJAX requests. The framework is designed to be lightweight, with a core library that can be extended with additional modules as needed. MooTools is compatible with all modern browsers and has a strong focus on cross-browser compatibility. It is often used in conjunction with other libraries and frameworks, such as jQuery, to enhance functionality and reduce development time. MooTools has a dedicated community of developers who contribute to its ongoing development and support. The framework is open-source and available under the MIT license, making it a popular choice for both small and large-scale web development projects.