# Metro vs Turbopack

| Attribute | Metro | Turbopack |
|---|---|---|
| **Vioscale score** | 71 (21% (low)) | 61.1 (22% (low)) |
| activity.commits_last_30d | 50 | 100 |
| adoption.dependent_repos | 305,465 | 304,007 |
| adoption.github_stars | 5,627 | 141,941 |
| deployment.options | `{"self_hosted":true}` | - |
| description.long | Optimized JavaScript bundler for React Native that prioritizes rapid feedback cycles and supports large-scale projects with thousands of modules. | A Rust-based bundler integrated into Next.js that handles multiple compilers and bundle stitching for client and server environments. Requires native bindings on macOS, Windows, and Linux, with WebAssembly fallback on other platforms. |
| integrations.count | - | 3 |
| integrations.list | - | `[{"name":"SWC"},{"name":"Lightning CSS"},{"name":"Sass"}]` |
| language.primary | JavaScript | JavaScript |
| license.spdx | MIT | MIT |
| market.availability | - | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://metrobundler.dev","retrievedAt":"2026-08-20T16:36:51.300Z"}` | - |
| pricing.free_tier | yes | - |
| pricing.model | open_source | - |
| pricing.price_level | free | - |
| release.cadence_days | 11 | - |
| release.history | `[{"url":"https://github.com/react/metro/releases/tag/v0.84.5","date":"2026-08-19T15:29:25Z","type":"stable","version":"v0.84.5"},{"url":"https://github.com/react/metro/releases/tag/v0.83.8","date":"2026-08-19T15:21:23Z","type":"stable","version":"v0.83.8"},{"url":"https://github.com/react/metro/releases/tag/v0.87.0","date":"2026-07-13T15:23:08Z","type":"stable","version":"v0.87.0"},{"url":"https://github.com/react/metro/releases/tag/v0.86.0","date":"2026-07-06T16:46:29Z","type":"stable","version":"v0.86.0"},{"url":"https://github.com/react/metro/releases/tag/v0.85.0","date":"2026-06-23T16:07:47Z","type":"stable","version":"v0.85.0"},{"url":"https://github.com/react/metro/releases/tag/v0.84.4","date":"2026-04-30T11:39:20Z","type":"stable","version":"v0.84.4"},{"url":"https://github.com/react/metro/releases/tag/v0.83.7","date":"2026-04-29T10:46:10Z","type":"stable","version":"v0.83.7"},{"url":"https://github.com/react/metro/releases/tag/v0.83.6","date":"2026-04-13T17:00:24Z","type":"stable","version":"v0.83.6"},{"url":"https://github.com/react/metro/releases/tag/v0.84.3","date":"2026-04-13T16:04:32Z","type":"stable","version":"v0.84.3"},{"url":"https://github.com/react/metro/releases/tag/v0.83.5","date":"2026-03-01T16:15:07Z","type":"stable","version":"v0.83.5"},{"url":"https://github.com/react/metro/releases/tag/v0.84.2","date":"2026-02-27T17:48:20Z","type":"stable","version":"v0.84.2"},{"url":"https://github.com/react/metro/releases/tag/v0.84.1","date":"2026-02-25T15:02:37Z","type":"stable","version":"v0.84.1"},{"url":"https://github.com/react/metro/releases/tag/v0.84.0","date":"2026-02-20T20:49:15Z","type":"stable","version":"v0.84.0"},{"url":"https://github.com/react/metro/releases/tag/v0.83.4","date":"2026-02-20T03:41:11Z","type":"stable","version":"v0.83.4"},{"url":"https://github.com/react/metro/releases/tag/v0.83.3","date":"2025-10-01T12:22:13Z","type":"stable","version":"v0.83.3"},{"url":"https://github.com/react/metro/releases/tag/v0.83.2","date":"2025-09-18T16:05:59Z","type":"stable","version":"v0.83.2"},{"url":"https://github.com/react/metro/releases/tag/v0.83.1","date":"2025-07-24T14:02:11Z","type":"stable","version":"v0.83.1"},{"url":"https://github.com/react/metro/releases/tag/v0.83.0","date":"2025-07-13T11:12:43Z","type":"stable","version":"v0.83.0"},{"url":"https://github.com/react/metro/releases/tag/v0.82.5","date":"2025-07-06T08:13:15Z","type":"stable","version":"v0.82.5"},{"url":"https://github.com/react/metro/releases/tag/v0.82.4","date":"2025-05-21T17:08:59Z","type":"stable","version":"v0.82.4"}]` | `[{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.8","date":"2026-08-25T23:46:22Z","type":"prerelease","version":"v16.4.0-canary.8"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.7","date":"2026-08-25T16:44:14Z","type":"prerelease","version":"v16.4.0-canary.7"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.3","date":"2026-08-25T16:17:10Z","type":"stable","version":"v16.3.3"},{"url":"https://github.com/vercel/next.js/releases/tag/v15.5.24","date":"2026-08-25T16:16:55Z","type":"stable","version":"v15.5.24"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.6","date":"2026-08-24T23:45:20Z","type":"prerelease","version":"v16.4.0-canary.6"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.5","date":"2026-08-24T19:47:50Z","type":"prerelease","version":"v16.4.0-canary.5"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.4","date":"2026-08-24T12:02:56Z","type":"prerelease","version":"v16.4.0-canary.4"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.3","date":"2026-08-23T23:46:47Z","type":"prerelease","version":"v16.4.0-canary.3"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.2","date":"2026-08-22T23:45:43Z","type":"prerelease","version":"v16.4.0-canary.2"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.1","date":"2026-08-21T23:43:34Z","type":"prerelease","version":"v16.4.0-canary.1"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.4.0-canary.0","date":"2026-08-21T10:05:23Z","type":"prerelease","version":"v16.4.0-canary.0"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.2","date":"2026-08-21T09:36:39Z","type":"stable","version":"v16.3.2"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.26","date":"2026-08-20T23:48:51Z","type":"prerelease","version":"v16.3.1-canary.26"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.25","date":"2026-08-19T23:46:26Z","type":"prerelease","version":"v16.3.1-canary.25"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.24","date":"2026-08-18T23:44:07Z","type":"prerelease","version":"v16.3.1-canary.24"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.23","date":"2026-08-18T11:59:57Z","type":"prerelease","version":"v16.3.1-canary.23"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.22","date":"2026-08-17T23:45:39Z","type":"prerelease","version":"v16.3.1-canary.22"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.21","date":"2026-08-16T23:55:38Z","type":"prerelease","version":"v16.3.1-canary.21"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.20","date":"2026-08-15T23:52:35Z","type":"prerelease","version":"v16.3.1-canary.20"},{"url":"https://github.com/vercel/next.js/releases/tag/v16.3.1-canary.19","date":"2026-08-14T23:46:59Z","type":"prerelease","version":"v16.3.1-canary.19"}]` |
| security.scorecard | 5.1 | 6.2 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=metro-minify-uglify&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40next%2Fenv&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Bundlers)

| Capability | Metro | Turbopack |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Dev server hmr | - | - |
| Native esm dev | - | - |
| Code splitting | - | - |
| Tree shaking | - | - |
| Css bundling | - | - |
| Zero config | - | - |
| Webpack plugin compat | - | - |
| Rollup plugin compat | - | - |
| Monorepo aware | - | - |
| Source maps | - | - |

*Source: Vioscale. Generated 2026-09-01T14:32:24.583Z. "-" = undocumented, not absent.*