Tamagui

Tamagui is the universal style library and UI kit for React and React Native: write once, deploy fast, and achieve 100% parity on web and native.

Tamagui is a comprehensive style system and UI kit for building truly universal React applications (Web and Native). It solves the cross-platform performance trade-off with a novel optimizing compiler (@tamagui/static): this tool evaluates code at build-time, flattening complex component trees into minimal DOM elements and atomic CSS on the web, or hoisted style objects on native. This process dramatically improves performance, often showing render times as low as 0.02ms, a significant gain over alternatives like `react-native-web` (0.063ms). The system includes a full suite of components, a typed design system (tokens, themes, sizes), and universal animation support, enabling developers to share a high percentage of code while maintaining platform-ideal performance and a superior developer experience.

https://tamagui.dev