Riot.js

Riot.js is a lightweight component-based JavaScript library for building user interfaces with a simple, expressive syntax. The library enables developers to create reusable custom components using an HTML-like tag syntax that combines structure, styling, and behavior. Riot.js features a minimalist API that is easy to learn while providing powerful features like reactive data binding and virtual DOM updates. The library has a very small footprint (under 10KB minified and gzipped), making it suitable for projects where bundle size is a concern. Riot.js components support lifecycle methods, conditional rendering, loops, and event handling similar to larger frameworks but with less complexity. The library can be used with or without a build system, providing flexibility for both modern build pipelines and simple script inclusion. Riot.js is commonly used in projects that need component-based architecture without the overhead of larger frameworks like React or Vue.