Solid.js

Solid.js is a declarative JavaScript library for building user interfaces using fine-grained reactivity without a virtual DOM. Unlike React, which re-renders component trees and diffs the virtual DOM, Solid tracks exactly which data each DOM node depends on and updates only those specific nodes when data changes.

Solid compiles JSX templates into optimized DOM operations at build time, producing vanilla JavaScript that directly manipulates the DOM. The API looks similar to React with JSX syntax and createSignal similar to useState, which lowers the learning curve. However, components run only once rather than re-executing on every state change, eliminating performance pitfalls. For web developers evaluating modern frameworks, Solid achieves top-tier benchmark performance while maintaining a familiar authoring experience.