Nix vs opam
| Nix | opam | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, self-hosted, Windows | Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Package formats | Nix expressions, derivations, flakes | opam package definition files and archives |
| Supported platforms | Linux, macOS, Windows through WSL2 | Linux, macOS, FreeBSD, OpenBSD, NetBSD, Windows |
| Dependency resolution | Yes | Yes |
| Lockfile support | Yes | Yes |
| Workspace support | Yes | — |
| Offline installation | Yes | Yes |
Both are listed in Best Package Managers. On The Geeks Club, Nix scores higher on our published basis.