Chart.js

NVD3 is an open-source JavaScript visualization library built on top of D3.js. It aims to simplify the process of creating common chart types with D3 by providing reusable chart components. NVD3 offers a range of chart types including line, bar, scatter, and pie charts, all with built-in interactivity and responsiveness. While it abstracts away some of D3's complexity, it still allows access to the underlying D3 objects for advanced customization. NVD3 is particularly useful for developers who want to leverage D3's power but need a quicker way to create standard chart types.

ECharts is a powerful open-source JavaScript visualization library developed by Baidu. It offers a wide range of chart types, from basic bar and line charts to more complex 3D and GL visualizations. ECharts is known for its performance optimization, able to handle large-scale data sets efficiently. It provides a rich set of interactive features including zooming, data brushing, and tooltip customization. ECharts also stands out for its strong support for both desktop and mobile devices, automatically adapting to different screen sizes. With its comprehensive API and extensive documentation, ECharts is suitable for both simple charting needs and complex, data-intensive applications.

Raphael is a small, yet powerful JavaScript library for working with vector graphics on the web. It simplifies the creation and manipulation of Scalable Vector Graphics (SVG) using a consistent API that works across different browsers. Raphael abstracts the complexities of different SVG implementations and even provides VML support for older versions of Internet Explorer. This library is particularly useful for creating interactive diagrams, custom charts, or any scenario requiring programmatic manipulation of vector graphics. Its simplicity and cross-browser compatibility make it a valuable tool for developers working on projects that require sophisticated graphics rendering.

KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. Developed by Khan Academy as an alternative to MathJax, KaTeX prioritizes speed and simplicity. It renders mathematical notation in the browser using only CSS and web fonts, resulting in faster load times compared to more complex math rendering engines. KaTeX supports a large subset of LaTeX and offers features like auto-rendering of math in text content. While it may not support all the advanced features of MathJax, its speed makes it an excellent choice for applications where quick rendering of mathematical content is crucial.

PixiJS is a powerful, open-source 2D rendering engine for the web. It utilizes WebGL for hardware-accelerated graphics rendering, with canvas fallback for older browsers. PixiJS is designed for creating high-performance animations, games, and interactive visualizations. It offers a simple yet comprehensive API for working with sprites, textures, and other 2D graphics elements. PixiJS is particularly noted for its speed, capable of rendering thousands of sprites at 60 frames per second. While primarily used for game development, it's also valuable for any web application requiring complex, high-performance 2D graphics.