Apps to Event Handling

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.

wxPython is a popular and mature GUI toolkit for the Python programming language. It provides a native look and feel on various operating systems, allowing developers to create desktop applications with rich user interfaces.

Zepto.js is a minimalist JavaScript library specifically designed for mobile web browsers, offering a jQuery-compatible API for handling DOM manipulation, events, AJAX, and animations, while prioritizing small size and performance.

CasperJS is a navigation scripting and testing utility for PhantomJS and SlimerJS headless browsers. It significantly simplifies web testing and scripting tasks by offering a high-level API that wraps the core functionalities of these engines, making common operations like navigation, form filling, and capturing screenshots intuitive and straightforward for developers and testers.

Webix UI is a comprehensive JavaScript library for building cross-platform HTML5 and JavaScript applications. It provides a wide array of highly customizable widgets and controls, enabling developers to create rich and responsive user interfaces for desktop and mobile web applications.

Raphaël is a powerful JavaScript library that simplifies the creation and manipulation of vector graphics directly within web browsers. It provides a robust API for working with SVG and VML, enabling dynamic and interactive visual elements.

Simple DirectMedia Layer (SDL) is a cross-platform, open-source development library offering low-level access to essential hardware like audio, input devices, and graphics APIs (OpenGL, Direct3D). It's a fundamental layer for game development and creating interactive applications.

D3.js is a powerful JavaScript library designed for creating dynamic, interactive, and data-driven documents, primarily focusing on complex data visualizations in modern web browsers. It leverages existing web technologies like HTML, SVG, and CSS.

Leaflet is a leading open-source JavaScript library for creating mobile-friendly interactive maps. It's designed to be lightweight, simple, and highly performant.