Comparison

Metro vs Rspack

No clear leader: Metro (65.9) and Rspack (63.8) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Metro66
Rspack64
Score
vioscaleAI score
Metro66 / 100medium · 66%
Rspack64 / 100medium · 65%
Pricing
Free tier
Metro✓
Rspack✓
Model
Price level
Metrofree
Rspackfree
Integrations
Count
Metro–
Rspack17
Adoption
Dependent repos
Metro305,465
Rspack18
Github stars
Metro5,648
Rspack12,939
Activity
Commits last 30d
Metro73
Rspack100
Release
Cadence days
Metro11
Rspack5
History
Rspack20 items
License
Spdx
MetroMIT
RspackMIT
Language
Primary
RspackRust
Content
Faq
Metro5 items
Rspack6 items

Capabilities

Feature-by-feature on the axes that matter for bundlers. “-” means undocumented, not absent.

Capabilities
Dev server hmr
Metro✓
Rspack✓
Native esm dev
Metro-
Rspack-
Code splitting
Metro-
Rspack✓
Tree shaking
Metro-
Rspack✓
Css bundling
Metro-
Rspack✓
Zero config
Metro-
Rspack-
Webpack plugin compat
Metro-
Rspack✓
Rollup plugin compat
Metro-
Rspack-
Monorepo aware
Metro-
Rspack-
Source maps
Metro✓
Rspack✓

What each one is

The product in its own terms, so the numbers below have context.

Metro

Optimized JavaScript bundler for React Native that prioritizes rapid feedback cycles and supports large-scale projects with thousands of modules.

Independently observed

Rspack

Rspack is a Rust-powered bundler designed as a drop-in replacement for webpack. It combines Rust's performance with JavaScript tools through parallel architecture to provide faster builds and superior developer experience with HMR.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Metro

Open sourceFree tier
as of verify ↗

Rspack

Open source
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Metro✗
Rspack✓
CLI
Metro✓
Rspack✓
Deployment
Self-hosted
Metro✓
Rspack✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Metro

Not documented yet.

Rspack

18 total
  • Rsbuild
  • Rslib
  • Rstest
  • Rslint
  • Docusaurus
  • Modern.js
  • Meteor
  • Next.js
  • Nuxt
  • Nx
  • React Native
  • Storybook
  • TanStack Router
  • TanStack Start
  • Rsdoctor
  • Angular Rspack
  • Extension.js
  • Re.Pack
Independently observed
Still deciding?

Metro or Rspack: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.