Konva.js

Anime.js (pronounced /ˈæn.ə.meɪ/) is a lightweight yet powerful JavaScript animation library. It offers a simple and intuitive API for creating complex animations with ease. Anime.js can animate a wide variety of targets including CSS properties, SVG attributes, DOM elements, and JavaScript objects. Its lightweight nature doesn't compromise on features, offering timeline support, keyframes, and easing functions. The library is particularly popular for creating smooth, performant web animations, from simple UI interactions to elaborate motion graphics.

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.

D3.js (Data-Driven Documents) is a powerful JavaScript library for producing dynamic, interactive data visualizations in web browsers. It leverages web standards like HTML, SVG, and CSS to transform data into visual representations. D3's strength lies in its flexibility and fine-grained control over the final visualization. It provides a data-join concept that allows efficient updating of the DOM based on data changes. While it has a steeper learning curve compared to some other visualization libraries, D3 is incredibly versatile, capable of creating everything from simple charts to complex, interactive data exploratory tools.

Three.js is a cross-browser JavaScript library and API used for creating and displaying animated 3D computer graphics in web browsers. It utilizes WebGL for hardware-accelerated rendering, but can fall back on other rendering modes for older browsers. Three.js simplifies the complexity of 3D graphics programming, providing high-level abstractions for scenes, cameras, lights, and materials. It's widely used for creating 3D visualizations, games, product configurators, and immersive web experiences. Three.js supports various features including realistic lighting, shadows, textures, and even VR content creation.