# cloud-init vs NixOS / Nix

| Attribute | cloud-init | NixOS / Nix |
|---|---|---|
| **vioscaleAI score** | 51.9 (66% (medium)) | 54.6 (51% (medium)) |
| activity.commits_last_30d | 34 | 100 |
| adoption.dependent_repos | 0 | 0 |
| adoption.github_stars | 3,833 | 17,860 |
| content.faq | `[{"answer":"An open-source utility that customizes cloud instances during boot by applying user-provided configuration data, supporting all major cloud providers and Linux distributions. It is indexed under Configuration Management Tools.","source":"https://cloud-init.io/","question":"What is cloud-init?","confidence":0.6},{"answer":"cloud-init 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://cloud-init.io/","question":"Is cloud-init free to use?","confidence":0.6},{"answer":"cloud-init supports Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://cloud-init.io/","question":"What platforms does cloud-init support?","confidence":0.6},{"answer":"Yes. cloud-init can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://cloud-init.io/","question":"Can cloud-init be self-hosted?","confidence":0.6},{"answer":"cloud-init is available worldwide. The vendor is headquartered in the United Kingdom.","source":"https://cloud-init.io/","question":"Where is cloud-init available?","confidence":0.75}]` | `[{"answer":"Nix enables reproducible, isolated package builds and declarative system configurations, ensuring that package installations cannot break existing systems and allowing rollback to previous versions. It is indexed under Configuration Management Tools.","source":"https://nixos.org","question":"What is NixOS / Nix?","confidence":0.6},{"answer":"NixOS / Nix is open source, so it can be self-hosted and used at no licence cost. It is released under the LGPL-2.1 licence. Pricing changes often, so verify at source before relying on it.","source":"https://nixos.org","question":"Is NixOS / Nix free to use?","confidence":0.6},{"answer":"NixOS / Nix supports Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://nixos.org","question":"What platforms does NixOS / Nix support?","confidence":0.6},{"answer":"Yes. NixOS / Nix can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://nixos.org","question":"Can NixOS / Nix be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for NixOS / Nix. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as NixOS / Nix not holding them. Always confirm compliance directly before you rely on it.","source":"https://nixos.org/community/teams/security","question":"What security certifications does NixOS / Nix have?","confidence":0.7},{"answer":"Yes. NixOS / Nix is published under the LGPL-2.1 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/NixOS/nix","question":"Is NixOS / Nix open source?","confidence":0.95},{"answer":"NixOS / Nix is available worldwide. The vendor is headquartered in the Netherlands.","source":"https://nixos.org","question":"Where is NixOS / Nix available?","confidence":0.75}]` |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A boot-time initialization framework for Linux and Unix systems that automatically detects the cloud environment, retrieves configuration metadata, and provisions instances with network setup, storage configuration, SSH keys, and other initialization tasks. Supports all major public clouds, private cloud infrastructure, and bare-metal systems. | A package manager and system configuration tool that uses functional programming principles to ensure reproducible builds and deployments work consistently across different machines and environments. |
| features.capabilities | `{"model":"push","hosting":"self","idempotent":true,"architecture":"agentless","desired_state":true,"masterless_mode":true,"windows_support":false,"open_source_core":true,"cloud_provisioning":true}` | `{"hosting":"self","language":"Nix","idempotent":true,"architecture":"declarative_os","desired_state":true,"masterless_mode":true,"windows_support":true,"content_registry":true,"open_source_core":true,"cloud_provisioning":true}` |
| language.primary | Python | C++ |
| license.spdx | - | LGPL-2.1 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"NL","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"linux":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://cloud-init.io/","retrievedAt":"2026-08-21T12:43:06.271Z"}` | `{"type":"open_source","sourceUrl":"https://nixos.org","retrievedAt":"2026-10-13T15:12:22.888Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 38 | - |
| release.history | `[{"url":"https://github.com/canonical/cloud-init/releases/tag/26.2","date":"2026-07-29T03:33:43Z","type":"stable","version":"26.2"},{"url":"https://github.com/canonical/cloud-init/releases/tag/26.1","date":"2026-02-28T02:05:06Z","type":"stable","version":"26.1"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.3","date":"2025-09-26T11:33:24Z","type":"stable","version":"25.3"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.2","date":"2025-08-12T19:05:26Z","type":"stable","version":"25.2"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.1.4","date":"2025-08-06T19:27:52Z","type":"stable","version":"25.1.4"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.1.3","date":"2025-06-12T20:48:07Z","type":"stable","version":"25.1.3"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.1.2","date":"2025-05-01T17:45:51Z","type":"stable","version":"25.1.2"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.1.1","date":"2025-03-24T17:21:47Z","type":"stable","version":"25.1.1"},{"url":"https://github.com/canonical/cloud-init/releases/tag/25.1","date":"2025-02-20T21:12:24Z","type":"stable","version":"25.1"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.4.1","date":"2025-01-15T16:21:06Z","type":"stable","version":"24.4.1"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.4","date":"2024-11-25T16:33:16Z","type":"stable","version":"24.4"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.3.1","date":"2024-09-05T17:05:38Z","type":"stable","version":"24.3.1"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.3","date":"2024-08-30T22:38:19Z","type":"stable","version":"24.3"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.2","date":"2024-07-03T15:35:00Z","type":"stable","version":"24.2"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.7","date":"2024-06-05T16:36:32Z","type":"stable","version":"24.1.7"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.6","date":"2024-05-24T17:01:37Z","type":"stable","version":"24.1.6"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.4","date":"2024-04-05T21:48:54Z","type":"stable","version":"24.1.4"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.3","date":"2024-03-27T13:17:42Z","type":"stable","version":"24.1.3"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.2","date":"2024-03-21T15:55:41Z","type":"stable","version":"24.1.2"},{"url":"https://github.com/canonical/cloud-init/releases/tag/24.1.1","date":"2024-03-12T02:40:29Z","type":"stable","version":"24.1.1"}]` | - |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 6 | 6.2 |
| security.trust_center | - | https://nixos.org/community/teams/security |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=ubuntu&package_name=cloud-init&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=nix&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Configuration Management Tools)

| Capability | cloud-init | NixOS / Nix |
|---|:--:|:--:|
| **Core** |  |  |
| Architecture | Agentless / SSH-push | Declarative-OS |
| Push / pull model | Push | - |
| Config language | - | Nix |
| **Deployment** |  |  |
| Masterless mode | ✓ | ✓ |
| Hosting | Self-hosted only | Self-hosted only |
| **Correctness** |  |  |
| Idempotent | ✓ | ✓ |
| **Model** |  |  |
| Desired-state declarative | ✓ | ✓ |
| **Ecosystem** |  |  |
| Content registry | - | ✓ |
| **Platform** |  |  |
| Windows support | ✗ | ✓ |
| **Scope** |  |  |
| Cloud provisioning | ✓ | ✓ |
| **Governance** |  |  |
| Policy / compliance | - | - |
| **Commercial** |  |  |
| Enterprise edition | - | - |
| **Licensing** |  |  |
| Open-source core | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-16T21:42:15.213Z. "-" = undocumented, not absent.*