Overview

Welcome to the Utoo documentation!

Utoo is a unified frontend toolchain combining three integrated components:

Package	Description
utoo	Fast, npm-compatible package manager
@utoo/pack	High-performance bundler with HMR
@utoo/web	Browser-native bundling via WebAssembly

Quick Start

Terminal


# Install utoo globally
npm install -g utoo
 
# Install project dependencies
ut install
 
# Run scripts
ut dev
ut build
 
# Execute remote packages
utx create-react-app my-app

Why Utoo?

Fast - Rust-powered performance
Compatible - Drop-in npm replacement
Unified - One toolchain for all needs
Modern - Native ESM, TypeScript, and more

Package-manager benchmark snapshot

These numbers come from the 2026-08-27 phased install benchmark for the ant-design project in a Linux China x86_64 environment connected directly to https://registry.npmmirror.com. Lower is better.

Scenario	utoo	Bun	pnpm 10	pnpm 12	aube
Full cold (`p0`)	12.04s ± 1.25s	19.63s ± 1.32s	33.88s ± 0.64s	18.50s ± 6.22s	26.47s ± 7.65s
Lock-only cold (`p3`)	22.28s ± 12.71s	31.75s ± 15.11s	40.70s ± 11.64s	31.67s ± 10.09s	—
Warm (`p4`)	1.22s ± 0.07s	4.58s ± 0.32s	9.86s ± 0.48s	2.60s ± 0.09s	—

Utoo has the fastest mean in all three valid install states. The high-variance p0 / p3 results are directional, while the p4 lead is the strongest signal. Aube’s p3 / p4 cells were rejected because the expected lockfile was missing. See utoo performance benchmarks for the full GitHub Actions npmjs results.

Installation

Package Manager

Terminal


npm install -g utoo

Bundler

Terminal


ut install @utoo/pack --save-dev

Browser Bundler

Terminal


ut install @utoo/web