NixOS
| Developer | NixOS contributors
NixOS Foundation |
|---|---|
| Written in | Nix expression language |
| OS family | Linux (Unix-like) |
| Working state | Current |
| Source model | Open source |
| Initial release | 0.1 / 3 June 2003 |
| Latest release | 25.05 / May 23, 2025 |
| Latest preview | 25.11-pre / May 16, 2025 |
| Repository | |
| Marketing target | General purpose |
| Package manager | Nix |
| Platforms | fully supported: x86-64, AArch64; limited support (must be built from source): i686 |
| Kernel type | Monolithic (Linux kernel) |
| License | MIT |
| Official website | nixos |
NixOS is a free and open-source Linux distribution based on the Nix package manager. NixOS uses an immutable design and an atomic update model. Its use of a declarative configuration system allows reproducibility and portability.
NixOS is configured using composable modules, and relies on packages defined in the Nixpkgs project. Package recipes and configurations are written in the purpose-built "Nix language" that ships with the Nix package manager.