# crates.io/Cargo vs JSR

**Leader by Vioscale score:** crates.io/Cargo

| Attribute | crates.io/Cargo | JSR |
|---|---|---|
| **Vioscale score** | 55.2 (35% (low)) | 47.9 (46% (low)) |
| activity.commits_last_30d | 100 | 48 |
| adoption.dependent_repos | 9,209 | 0 |
| adoption.github_stars | 15,429 | 2,969 |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | An open-source package manager and build system that handles fetching project dependencies and compiling Rust code. It is the official package management solution for the Rust ecosystem. | 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. |
| features.capabilities | `{"role":"manager_client","ecosystem":"rust","deployment":"cli_local","open_source":"oss","pricing_model":"free","package_formats":"single","lockfile_deterministic":true}` | `{"role":"public_registry","ecosystem":"polyglot","deployment":"saas","open_source":"oss","pricing_model":"free","package_formats":"single","private_packages":true,"supply_chain_integrity":true}` |
| integrations.count | - | 6 |
| integrations.list | - | `[{"name":"Node.js"},{"name":"Deno"},{"name":"Bun"},{"name":"Cloudflare Workers"},{"name":"npm"},{"name":"Algolia"}]` |
| language.primary | Rust | Rust |
| license.spdx | Apache-2.0 | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"free","summary":"Free and open source","freeTier":true,"sourceUrl":"https://crates.io","retrievedAt":"2026-08-14T08:35:22.875Z"}` | `{"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"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.scorecard | 7.3 | 5.4 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=cargo&package_name=home&per_page=100","last_12m":0,"max_severity":null}` | `{"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}` |

## Capabilities (Package Registries)

| Capability | crates.io/Cargo | JSR |
|---|:--:|:--:|
| **Core** |  |  |
| Role | Package manager client | Public registry |
| **Ecosystem** |  |  |
| Ecosystem / language | Rust | Polyglot |
| **Deployment** |  |  |
| Deployment | CLI-local | 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 2026-09-01T17:40:38.785Z. "-" = undocumented, not absent.*