# Composer/Packagist vs uv

| Attribute | Composer/Packagist | uv |
|---|---|---|
| **vioscaleAI score** | 62.6 (50% (medium)) | 64.6 (63% (medium)) |
| activity.commits_last_30d | 51 | 100 |
| adoption.dependent_repos | 35,414 | 0 |
| adoption.github_stars | 29,550 | 90,408 |
| adoption.package_downloads_weekly | - | 28,008,035 |
| content.faq | `[{"answer":"Composer is a PHP dependency management tool that uses a centralized package repository (Packagist.org) to discover and install project dependencies. It supports version control integration, security scanning, and both public and private package repositories. It is indexed under Package Registries.","source":"https://packagist.org","question":"What is Composer/Packagist?","confidence":0.6},{"answer":"Composer/Packagist offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://packagist.org","question":"Is Composer/Packagist free?","confidence":0.6},{"answer":"Composer/Packagist supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://packagist.org","question":"What platforms does Composer/Packagist support?","confidence":0.6},{"answer":"Yes. Composer/Packagist can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://packagist.org","question":"Can Composer/Packagist be self-hosted?","confidence":0.6},{"answer":"We have confirmed 3 integrations for Composer/Packagist, including GitHub, Subversion and Mercurial. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://packagist.org","question":"What does Composer/Packagist integrate with?","confidence":0.6},{"answer":"Yes. Composer/Packagist 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/composer/composer","question":"Is Composer/Packagist open source?","confidence":0.95}]` | `[{"answer":"A unified command-line tool that consolidates the functionality of multiple Python package management and development utilities into a single interface. It delivers substantially faster dependency resolution and installation compared to traditional package managers. It is indexed under Package Registries.","source":"https://docs.astral.sh/uv","question":"What is uv?","confidence":0.6},{"answer":"uv is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://docs.astral.sh/uv","question":"Is uv free to use?","confidence":0.6},{"answer":"uv supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://docs.astral.sh/uv","question":"What platforms does uv support?","confidence":0.6},{"answer":"Yes. uv can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://docs.astral.sh/uv","question":"Can uv be self-hosted?","confidence":0.6},{"answer":"We have confirmed 10 integrations for uv, including Docker, GitHub Actions, GitLab CI/CD, AWS Lambda, Azure Artifacts, AWS CodeArtifact, JFrog Artifactory and PyTorch, plus 2 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://docs.astral.sh/uv","question":"What does uv integrate with?","confidence":0.6},{"answer":"Yes. uv is published under the Apache-2.0 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/astral-sh/uv","question":"Is uv open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Composer is a PHP dependency management tool that uses a centralized package repository (Packagist.org) to discover and install project dependencies. It supports version control integration, security scanning, and both public and private package repositories. | A unified command-line tool that consolidates the functionality of multiple Python package management and development utilities into a single interface. It delivers substantially faster dependency resolution and installation compared to traditional package managers. |
| features.capabilities | `{"role":"public_registry","ecosystem":"php","deployment":"both","workspaces":true,"open_source":"oss","pricing_model":"free","upstream_proxy":true,"package_formats":"single","private_packages":true,"vuln_license_scanning":true,"lockfile_deterministic":true,"supply_chain_integrity":true}` | `{"role":"manager_client","ecosystem":"python","deployment":"cli_local","workspaces":true,"open_source":"oss","pricing_model":"free","package_formats":"multi","vuln_license_scanning":false,"lockfile_deterministic":true,"supply_chain_integrity":true}` |
| integrations.count | 4 | 17 |
| integrations.list | `[{"name":"GitHub"},{"name":"Git"},{"name":"Subversion"},{"name":"Mercurial"}]` | `[{"name":"Docker"},{"name":"GitHub Actions"},{"name":"GitLab CI/CD"},{"name":"AWS Lambda"},{"name":"Azure Artifacts"},{"name":"AWS CodeArtifact"},{"name":"JFrog Artifactory"},{"name":"PyTorch"},{"name":"FastAPI"},{"name":"Jupyter"}]` |
| language.primary | PHP | Rust |
| license.spdx | MIT | Apache-2.0 |
| platform.support | `{"cli":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://packagist.org","retrievedAt":"2026-09-10T16:03:11.144Z"}` | `{"type":"open_source","sourceUrl":"https://docs.astral.sh/uv","retrievedAt":"2026-10-05T11:03:05.919Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 6 | 2 |
| release.history | `[{"url":"https://github.com/composer/composer/releases/tag/2.10.3","date":"2026-08-27T11:41:32Z","type":"stable","version":"2.10.3"},{"url":"https://github.com/composer/composer/releases/tag/2.2.30","date":"2026-08-27T11:41:29Z","type":"stable","version":"2.2.30"},{"url":"https://github.com/composer/composer/releases/tag/2.10.2","date":"2026-07-01T09:33:23Z","type":"stable","version":"2.10.2"},{"url":"https://github.com/composer/composer/releases/tag/2.2.29","date":"2026-07-01T09:32:54Z","type":"stable","version":"2.2.29"},{"url":"https://github.com/composer/composer/releases/tag/2.10.1","date":"2026-06-04T08:29:43Z","type":"stable","version":"2.10.1"},{"url":"https://github.com/composer/composer/releases/tag/2.10.0","date":"2026-05-28T10:53:10Z","type":"stable","version":"2.10.0"},{"url":"https://github.com/composer/composer/releases/tag/2.10.0-RC2","date":"2026-05-20T13:43:05Z","type":"prerelease","version":"2.10.0-RC2"},{"url":"https://github.com/composer/composer/releases/tag/2.9.8","date":"2026-05-13T07:40:30Z","type":"stable","version":"2.9.8"},{"url":"https://github.com/composer/composer/releases/tag/2.2.28","date":"2026-05-13T07:40:14Z","type":"stable","version":"2.2.28"},{"url":"https://github.com/composer/composer/releases/tag/1.10.28","date":"2026-05-13T09:07:04Z","type":"stable","version":"1.10.28"},{"url":"https://github.com/composer/composer/releases/tag/2.9.7","date":"2026-04-14T11:36:04Z","type":"stable","version":"2.9.7"},{"url":"https://github.com/composer/composer/releases/tag/2.9.6","date":"2026-04-14T09:46:45Z","type":"stable","version":"2.9.6"},{"url":"https://github.com/composer/composer/releases/tag/2.2.27","date":"2026-04-14T09:46:42Z","type":"stable","version":"2.2.27"},{"url":"https://github.com/composer/composer/releases/tag/2.10.0-RC1","date":"2026-04-01T14:00:19Z","type":"stable","version":"2.10.0-RC1"},{"url":"https://github.com/composer/composer/releases/tag/2.9.5","date":"2026-01-29T10:45:46Z","type":"stable","version":"2.9.5"},{"url":"https://github.com/composer/composer/releases/tag/2.9.4","date":"2026-01-22T13:12:55Z","type":"stable","version":"2.9.4"},{"url":"https://github.com/composer/composer/releases/tag/2.9.3","date":"2025-12-30T12:53:32Z","type":"stable","version":"2.9.3"},{"url":"https://github.com/composer/composer/releases/tag/2.2.26","date":"2025-12-30T12:52:58Z","type":"stable","version":"2.2.26"},{"url":"https://github.com/composer/composer/releases/tag/2.9.2","date":"2025-11-19T21:07:13Z","type":"stable","version":"2.9.2"},{"url":"https://github.com/composer/composer/releases/tag/2.9.1","date":"2025-11-13T15:18:16Z","type":"stable","version":"2.9.1"}]` | `[{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.23","date":"2026-10-03T17:34:11Z","type":"stable","version":"0.12.23"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.22","date":"2026-10-02T00:20:42Z","type":"stable","version":"0.12.22"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.21","date":"2026-09-29T21:14:06Z","type":"stable","version":"0.12.21"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.20","date":"2026-09-28T23:20:35Z","type":"stable","version":"0.12.20"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.19","date":"2026-09-25T00:33:02Z","type":"stable","version":"0.12.19"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.18","date":"2026-09-22T23:00:51Z","type":"stable","version":"0.12.18"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.17","date":"2026-09-18T18:59:24Z","type":"stable","version":"0.12.17"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.16","date":"2026-09-18T01:01:42Z","type":"stable","version":"0.12.16"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.15","date":"2026-09-15T12:09:40Z","type":"stable","version":"0.12.15"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.14","date":"2026-09-15T02:19:30Z","type":"stable","version":"0.12.14"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.13","date":"2026-09-10T19:27:24Z","type":"stable","version":"0.12.13"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.12","date":"2026-09-09T16:45:15Z","type":"stable","version":"0.12.12"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.11","date":"2026-09-08T20:45:27Z","type":"stable","version":"0.12.11"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.10","date":"2026-09-04T23:15:57Z","type":"stable","version":"0.12.10"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.9","date":"2026-09-01T21:58:26Z","type":"stable","version":"0.12.9"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.8","date":"2026-08-31T22:18:57Z","type":"stable","version":"0.12.8"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.7","date":"2026-08-27T22:14:06Z","type":"stable","version":"0.12.7"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.6","date":"2026-08-25T19:41:07Z","type":"stable","version":"0.12.6"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.5","date":"2026-08-14T19:57:52Z","type":"stable","version":"0.12.5"},{"url":"https://github.com/astral-sh/uv/releases/tag/0.12.4","date":"2026-08-13T21:16:08Z","type":"stable","version":"0.12.4"}]` |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.scorecard | 5.9 | - |
| security.vulnerabilities | `{"count":17,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=packagist&package_name=composer%2Fcomposer&per_page=100","last_12m":9,"max_severity":"HIGH"}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=spack&package_name=py-uv&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Package Registries)

| Capability | Composer/Packagist | uv |
|---|:--:|:--:|
| **Core** |  |  |
| Role | Public registry | Package manager client |
| **Ecosystem** |  |  |
| Ecosystem / language | PHP | Python |
| **Deployment** |  |  |
| Deployment | Both | 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: vioscaleAI. Generated 2026-10-16T20:12:46.249Z. "-" = undocumented, not absent.*