# NixOS / Nix vs Uyuni

**Leader by Vioscale score:** NixOS / Nix

| Attribute | NixOS / Nix | Uyuni |
|---|---|---|
| **Vioscale score** | 61.4 (58% (medium)) | 49 (17% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 17,573 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | Nix enables reproducible, isolated package builds and declarative system configurations, ensuring that package installations cannot break existing systems and allowing rollback to previous versions. | A centralized management system for automating patch deployment, configuration management, and compliance tracking across Linux infrastructure spanning datacenters, cloud platforms, and edge environments. |
| features.capabilities | `{"hosting":"self","language":"Nix","idempotent":true,"architecture":"declarative_os","desired_state":true,"masterless_mode":true,"windows_support":false,"content_registry":true,"open_source_core":true,"cloud_provisioning":true}` | `{"model":"both","hosting":"both","language":"YAML","idempotent":true,"architecture":"declarative_os","desired_state":true,"windows_support":false,"open_source_core":true,"policy_compliance":true,"cloud_provisioning":true}` |
| integrations.count | - | 1 |
| integrations.list | - | `[{"name":"Salt"}]` |
| language.primary | C++ | - |
| license.spdx | LGPL-2.1 | - |
| market.availability | `{"hqCountry":"NL","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"linux":true}` | `{"cli":true,"web":true,"linux":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://nixos.org","retrievedAt":"2026-08-14T13:40:51.023Z"}` | `{"type":"open_source","summary":"Free and open-source","freeTier":true,"sourceUrl":"https://www.uyuni-project.org","retrievedAt":"2026-08-13T23:07:20.733Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| reliability.status_page | yes | yes |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | yes |
| security.scorecard | 6.5 | - |
| security.vulnerabilities | `{"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 | NixOS / Nix | Uyuni |
|---|:--:|:--:|
| **Core** |  |  |
| Architecture | Declarative-OS | Declarative-OS |
| Push / pull model | - | Both |
| Config language | Nix | YAML |
| **Deployment** |  |  |
| Masterless mode | ✓ | - |
| Hosting | Self-hosted only | Cloud + self-hosted |
| **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: Vioscale. Generated 2026-09-01T17:01:18.707Z. "-" = undocumented, not absent.*