Rattler vs Spack
| Rattler | Spack | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Windows, macOS, Linux | Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Lockfile support | Yes | Yes |
| Environment management | Yes | Yes |
| Supported platforms | cross-platform | cross-platform |
| Private registry | — | Yes |
Both are listed in Best Python Package Managers. On Specifiction, Spack scores higher on our published basis.