# JSR vs Yarn

**Leader by Vioscale score:** Yarn

| Attribute | JSR | Yarn |
|---|---|---|
| **Vioscale score** | 47 (46% (low)) | 61.7 (71% (medium)) |
| activity.commits_last_30d | 48 | 18 |
| adoption.dependent_repos | 0 | 13,468 |
| adoption.github_stars | 2,969 | 8,100 |
| adoption.package_downloads_weekly | - | 9,559,608 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source package registry for JavaScript and TypeScript that publishes ECMAScript modules natively. It works across multiple JavaScript runtimes including Node.js, Deno, Bun, and Cloudflare Workers, with built-in TypeScript support, automatic documentation generation, and interoperability with npm packages. | Yarn is a package manager that functions as both a package and project manager, supporting everything from simple projects to industry monorepos for open source developers and enterprise users. |
| features.capabilities | `{"role":"public_registry","ecosystem":"polyglot","deployment":"saas","open_source":"oss","pricing_model":"free","package_formats":"single","private_packages":true,"supply_chain_integrity":true}` | `{"role":"manager_client","ecosystem":"js","deployment":"cli_local","workspaces":true,"open_source":"oss","pricing_model":"free","package_formats":"multi","private_packages":true}` |
| integrations.count | 6 | - |
| integrations.list | `[{"name":"Node.js"},{"name":"Deno"},{"name":"Bun"},{"name":"Cloudflare Workers"},{"name":"npm"},{"name":"Algolia"}]` | - |
| language.primary | Rust | TypeScript |
| license.spdx | MIT | BSD-2-Clause |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"free","plans":[{"free":true,"name":"Public","features":["Publish packages","ECMAScript modules","Automatic API documentation","TypeScript support","Cross-runtime compatibility"],"description":"Free public package registry","contactSales":false}],"summary":"Free and open-source","freeTier":true,"sourceUrl":"https://jsr.io","retrievedAt":"2026-08-14T08:31:11.032Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://yarnpkg.com","retrievedAt":"2026-08-13T18:17:55.345Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | - | 15 |
| release.history | - | `[{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.18.0","date":"2026-07-29T07:56:33Z","type":"stable","version":"@yarnpkg/cli/4.18.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.17.1","date":"2026-07-08T16:48:56Z","type":"stable","version":"@yarnpkg/cli/4.17.1"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.17.0","date":"2026-06-15T08:28:48Z","type":"stable","version":"@yarnpkg/cli/4.17.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.16.0","date":"2026-06-02T07:11:32Z","type":"stable","version":"@yarnpkg/cli/4.16.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.15.0","date":"2026-05-19T22:20:46Z","type":"stable","version":"@yarnpkg/cli/4.15.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.14.1","date":"2026-04-17T06:00:10Z","type":"stable","version":"@yarnpkg/cli/4.14.1"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.14.0","date":"2026-04-16T15:45:42Z","type":"stable","version":"@yarnpkg/cli/4.14.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.13.0","date":"2026-03-03T02:12:57Z","type":"stable","version":"@yarnpkg/cli/4.13.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.12.0","date":"2025-11-23T11:09:03Z","type":"stable","version":"@yarnpkg/cli/4.12.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.11.0","date":"2025-11-07T13:52:43Z","type":"stable","version":"@yarnpkg/cli/4.11.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.10.3","date":"2025-09-23T09:42:00Z","type":"stable","version":"@yarnpkg/cli/4.10.3"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.10.2","date":"2025-09-18T17:57:07Z","type":"stable","version":"@yarnpkg/cli/4.10.2"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.10.1","date":"2025-09-18T12:53:06Z","type":"stable","version":"@yarnpkg/cli/4.10.1"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.10.0","date":"2025-09-18T09:18:24Z","type":"stable","version":"@yarnpkg/cli/4.10.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.9.4","date":"2025-08-26T07:12:31Z","type":"stable","version":"@yarnpkg/cli/4.9.4"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.9.3","date":"2025-08-20T12:15:54Z","type":"stable","version":"@yarnpkg/cli/4.9.3"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.9.2","date":"2025-06-03T20:25:28Z","type":"stable","version":"@yarnpkg/cli/4.9.2"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.9.1","date":"2025-04-11T09:04:22Z","type":"stable","version":"@yarnpkg/cli/4.9.1"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.9.0","date":"2025-04-09T14:12:16Z","type":"stable","version":"@yarnpkg/cli/4.9.0"},{"url":"https://github.com/yarnpkg/berry/releases/tag/%40yarnpkg/cli/4.8.1","date":"2025-03-30T08:45:27Z","type":"stable","version":"@yarnpkg/cli/4.8.1"}]` |
| reliability.status_page | - | yes |
| security.scorecard | 5.4 | 3.4 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fjsr-io%2Fjsr&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40yarnpkg%2Fparsers&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Package Registries)

| Capability | JSR | Yarn |
|---|:--:|:--:|
| **Core** |  |  |
| Role | Public registry | Package manager client |
| **Ecosystem** |  |  |
| Ecosystem / language | Polyglot | JavaScript |
| **Deployment** |  |  |
| Deployment | SaaS | CLI-local |
| **Formats** |  |  |
| Package formats supported | Single ecosystem | Many formats |
| **Hosting** |  |  |
| Private / scoped packages | ✓ | ✓ |
| Upstream proxy / caching | - | - |
| **Resolution** |  |  |
| Lockfile / deterministic installs | - | - |
| Workspaces / monorepo | - | ✓ |
| Content-addressable store | - | - |
| **Supply chain** |  |  |
| Supply-chain integrity | ✓ | - |
| Vulnerability / licence scanning | - | - |
| **Licensing** |  |  |
| Openness | Open-source | Open-source |
| **Pricing** |  |  |
| Pricing model | Free / OSS | Free / OSS |

*Source: Vioscale. Generated 2026-09-01T16:36:09.006Z. "-" = undocumented, not absent.*