# JSR vs RubyGems

| Attribute | JSR | RubyGems |
|---|---|---|
| **Vioscale score** | 47 (46% (low)) | 79.6 (31% (low)) |
| activity.commits_last_30d | 48 | 100 |
| adoption.dependent_repos | 0 | 225,927 |
| adoption.github_stars | 2,969 | 3,954 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":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. | RubyGems is an open-source package hosting and distribution platform where Ruby developers discover, install, and publish gems (libraries). As a free, community-maintained service, it processes billions of downloads and is central to the Ruby development ecosystem. |
| 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":"public_registry","ecosystem":"ruby","deployment":"saas","open_source":"oss","pricing_model":"free","package_formats":"single"}` |
| integrations.count | 6 | - |
| integrations.list | `[{"name":"Node.js"},{"name":"Deno"},{"name":"Bun"},{"name":"Cloudflare Workers"},{"name":"npm"},{"name":"Algolia"}]` | - |
| language.primary | Rust | Ruby |
| license.spdx | MIT | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":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":"free","plans":[{"free":true,"name":"Free Public Registry","features":["Unlimited gem uploads","Unlimited downloads","Community support"],"description":"Publish and download gems; community-funded via donations","contactSales":false}],"summary":"Free. Community-funded via donations and sponsorships.","sourceUrl":"https://rubygems.org","retrievedAt":"2026-08-03T22:32:15.384Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | free |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 6 |
| release.history | - | `[{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.19","date":"2026-08-20T01:57:03Z","type":"stable","version":"v4.0.19"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.18","date":"2026-08-05T02:16:51Z","type":"stable","version":"v4.0.18"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.17","date":"2026-07-22T04:17:51Z","type":"stable","version":"v4.0.17"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.17","date":"2026-07-22T04:19:42Z","type":"stable","version":"bundler-v4.0.17"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.16","date":"2026-07-10T05:39:35Z","type":"stable","version":"v4.0.16"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.16","date":"2026-07-10T05:41:26Z","type":"stable","version":"bundler-v4.0.16"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.15","date":"2026-06-23T23:32:27Z","type":"stable","version":"v4.0.15"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.15","date":"2026-06-23T23:41:00Z","type":"stable","version":"bundler-v4.0.15"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.14","date":"2026-06-10T00:12:00Z","type":"stable","version":"bundler-v4.0.14"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.14","date":"2026-06-10T00:10:15Z","type":"stable","version":"v4.0.14"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.13","date":"2026-06-03T02:59:24Z","type":"stable","version":"v4.0.13"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.13","date":"2026-06-03T03:01:31Z","type":"stable","version":"bundler-v4.0.13"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.12","date":"2026-05-20T03:06:01Z","type":"stable","version":"v4.0.12"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.12","date":"2026-05-20T03:07:44Z","type":"stable","version":"bundler-v4.0.12"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.11","date":"2026-04-30T04:17:53Z","type":"stable","version":"v4.0.11"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.11","date":"2026-04-30T04:19:45Z","type":"stable","version":"bundler-v4.0.11"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.10","date":"2026-04-08T00:04:40Z","type":"stable","version":"bundler-v4.0.10"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.10","date":"2026-04-08T00:02:55Z","type":"stable","version":"v4.0.10"},{"url":"https://github.com/ruby/rubygems/releases/tag/v4.0.9","date":"2026-03-25T01:07:33Z","type":"stable","version":"v4.0.9"},{"url":"https://github.com/ruby/rubygems/releases/tag/bundler-v4.0.9","date":"2026-03-25T01:24:35Z","type":"stable","version":"bundler-v4.0.9"}]` |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.scorecard | 5.4 | 8.3 |
| 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":5,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=bundler&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` |

## Capabilities (Package Registries)

| Capability | JSR | RubyGems |
|---|:--:|:--:|
| **Core** |  |  |
| Role | Public registry | Public registry |
| **Ecosystem** |  |  |
| Ecosystem / language | Polyglot | Ruby |
| **Deployment** |  |  |
| Deployment | SaaS | SaaS |
| **Formats** |  |  |
| Package formats supported | Single ecosystem | Single ecosystem |
| **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 2026-09-01T16:52:22.455Z. "-" = undocumented, not absent.*