Spack
7.1#25 in package managersFree planFree planLinuxmacOSSelf-hostedWindows
VisitSpack vs uv
What both publish
| Fact | Spack | uv |
|---|---|---|
| Free plan | Yes | Yes |
| Integrations | Spack's services page lists GitLab, CDash, Grafana, Prometheus, and Metabase. | The documentation lists integrations and guides for Docker, Jupyter, marimo, GitHub Actions, GitLab CI/CD, Pre-commit, PyTorch, FastAPI, and several package registries. |
| Intended users | Spack was designed for large supercomputing centers where users and application teams share software installations across clusters and varied architectures. | Astral says it builds high-performance developer tools for the Python ecosystem to help developers ship software faster. |
| Lockfile support | Yes | Yes |
| Purpose | Spack is a package manager that makes installing scientific software easy on supercomputers, Linux, macOS, and Windows. | uv is an extremely fast Python package and project manager written in Rust. |
| Security | The project repository links to a security policy. | uv uses TLS with rustls and bundled Mozilla root certificates by default to verify HTTPS connections. |
Spack plans
- SpackFree
uv plans
- uvFree
Pick Spack if…
Spack suits scientific computing teams and users who need configurable software builds across platforms or shared cluster environments. It is also relevant to users who need multiple package configurations to coexist.
Pick uv if…
uv suits Python developers looking to manage project environments and dependencies, install Python versions, or run scripts and command-line tools. Its pip-compatible interface may appeal to those consolidating several Python tool workflows.