# Rolldown vs Rollup

**Leader by vioscaleAI score:** Rollup

| Attribute | Rolldown | Rollup |
|---|---|---|
| **vioscaleAI score** | 52 (62% (medium)) | 65.1 (76% (high)) |
| activity.commits_last_30d | 100 | 53 |
| adoption.dependent_repos | 2 | 1,133,301 |
| adoption.github_stars | 13,969 | 26,299 |
| content.faq | `[{"answer":"A JavaScript/TypeScript bundler combining Rollup-compatible APIs with esbuild feature parity, designed as the standard bundler for Vite. Free and open-source software built and maintained by a core team with community contributions. It is indexed under Bundlers.","source":"https://rolldown.rs","question":"What is Rolldown?","confidence":0.6},{"answer":"Rolldown is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://rolldown.rs","question":"Is Rolldown free to use?","confidence":0.6},{"answer":"Rolldown supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://rolldown.rs","question":"What platforms does Rolldown support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Rolldown, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://rolldown.rs","question":"Can Rolldown be self-hosted?","confidence":0.6},{"answer":"We have confirmed 5 integrations for Rolldown, including Rollup, Vite, esbuild, napi-rs and GitHub. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://rolldown.rs","question":"What does Rolldown integrate with?","confidence":0.6},{"answer":"Yes. Rolldown is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/rolldown/rolldown","question":"Is Rolldown open source?","confidence":0.95}]` | `[{"answer":"A module bundler that combines JavaScript files and compiles them using ES module format, supporting output to multiple formats (ES modules, CommonJS, UMD, SystemJS) and optimizing code size through tree-shaking to run efficiently in various environments including browsers and Node.js. It is indexed under Bundlers.","source":"https://rollupjs.org","question":"What is Rollup?","confidence":0.6},{"answer":"Rollup is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://rollupjs.org","question":"Is Rollup free to use?","confidence":0.6},{"answer":"Rollup supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://rollupjs.org","question":"What platforms does Rollup support?","confidence":0.6}]` |
| deployment.options | `{"cloud":true}` | - |
| description.long | A fast bundler for JavaScript/TypeScript projects written in Rust that provides Rollup-compatible APIs and plugin interfaces, designed with scope and capabilities similar to esbuild. | Rollup is a module bundler that compiles JavaScript code written as ES modules into various output formats for compatibility with different environments. It performs static analysis to eliminate unused code and can target modern browsers with native ES module support or legacy environments requiring CommonJS or UMD output. |
| features.capabilities | - | `{"open_source":true,"tree_shaking":true}` |
| integrations.count | 5 | 2 |
| integrations.list | `[{"name":"Rollup"},{"name":"Vite"},{"name":"esbuild"},{"name":"napi-rs"},{"name":"GitHub"}]` | `[{"name":"Vite"},{"name":"WMR"}]` |
| language.primary | Rust | JavaScript |
| license.spdx | MIT | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","plans":[{"free":true,"name":"Open Source","features":["Rust-based bundler","Rollup-compatible API","Esbuild feature parity","Built-in transforms and minification","Vite 8+ integration"],"description":"Full bundler with transforms, minification, and plugin support"}],"freeTier":true,"sourceUrl":"https://rolldown.rs","retrievedAt":"2026-08-20T16:36:15.492Z"}` | `{"type":"open_source","sourceUrl":"https://rollupjs.org","retrievedAt":"2026-08-20T16:33:55.692Z"}` |
| pricing.free_tier | yes | - |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 6 | 4 |
| release.history | `[{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.14","date":"2026-10-14T10:48:46Z","type":"stable","version":"v1.2.14"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.13","date":"2026-10-07T14:23:17Z","type":"stable","version":"v1.2.13"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.12","date":"2026-09-30T14:45:29Z","type":"stable","version":"v1.2.12"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.11","date":"2026-09-24T14:32:08Z","type":"stable","version":"v1.2.11"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.10","date":"2026-09-23T13:43:46Z","type":"stable","version":"v1.2.10"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.9","date":"2026-09-16T13:34:53Z","type":"stable","version":"v1.2.9"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.8","date":"2026-09-09T09:45:00Z","type":"stable","version":"v1.2.8"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.7","date":"2026-09-02T13:30:58Z","type":"stable","version":"v1.2.7"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.6","date":"2026-08-26T12:05:05Z","type":"stable","version":"v1.2.6"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.5","date":"2026-08-19T13:30:59Z","type":"stable","version":"v1.2.5"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.4","date":"2026-08-12T10:33:48Z","type":"stable","version":"v1.2.4"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.3","date":"2026-08-05T10:52:38Z","type":"stable","version":"v1.2.3"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.2","date":"2026-08-03T09:50:37Z","type":"stable","version":"v1.2.2"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.1","date":"2026-07-29T13:25:27Z","type":"stable","version":"v1.2.1"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.0","date":"2026-07-15T11:08:44Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.5","date":"2026-07-08T11:32:27Z","type":"stable","version":"v1.1.5"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.4","date":"2026-07-01T14:02:02Z","type":"stable","version":"v1.1.4"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.3","date":"2026-06-24T10:49:00Z","type":"stable","version":"v1.1.3"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.2","date":"2026-06-18T13:33:10Z","type":"stable","version":"v1.1.2"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.1","date":"2026-06-11T09:09:53Z","type":"stable","version":"v1.1.1"}]` | `[{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.6","date":"2026-10-13T09:04:50Z","type":"stable","version":"v4.64.6"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.5","date":"2026-10-10T13:05:03Z","type":"stable","version":"v4.64.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.4","date":"2026-10-10T06:08:53Z","type":"stable","version":"v4.64.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.3","date":"2026-10-08T18:11:54Z","type":"stable","version":"v4.64.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.2","date":"2026-10-07T17:41:17Z","type":"stable","version":"v4.64.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.1","date":"2026-10-07T05:43:11Z","type":"stable","version":"v4.64.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.0","date":"2026-10-02T15:41:02Z","type":"stable","version":"v4.64.0"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.6","date":"2026-10-01T06:53:07Z","type":"stable","version":"v4.63.6"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.5","date":"2026-09-24T10:09:48Z","type":"stable","version":"v4.63.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.4","date":"2026-09-19T06:38:02Z","type":"stable","version":"v4.63.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.3","date":"2026-09-14T12:47:02Z","type":"stable","version":"v4.63.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.2","date":"2026-09-12T06:39:14Z","type":"stable","version":"v4.63.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.1","date":"2026-08-28T06:01:35Z","type":"stable","version":"v4.63.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.0","date":"2026-08-25T13:05:57Z","type":"stable","version":"v4.63.0"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.5","date":"2026-08-20T17:03:22Z","type":"stable","version":"v4.62.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.4","date":"2026-08-01T05:22:37Z","type":"stable","version":"v4.62.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.3","date":"2026-07-26T15:00:28Z","type":"stable","version":"v4.62.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.2","date":"2026-06-19T14:57:25Z","type":"stable","version":"v4.62.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.1","date":"2026-06-19T12:43:26Z","type":"stable","version":"v4.62.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.0","date":"2026-06-13T08:32:26Z","type":"stable","version":"v4.62.0"}]` |
| security.scorecard | - | 6.5 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rolldown&per_page=100","last_12m":0,"max_severity":null}` | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rollup&per_page=100","last_12m":1,"max_severity":"HIGH"}` |

## Capabilities (Bundlers)

| Capability | Rolldown | Rollup |
|---|:--:|:--:|
| **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: vioscaleAI. Generated 2026-10-16T19:15:13.077Z. "-" = undocumented, not absent.*