index.html

---
layout: home
author_profile: false
title: <img src="/assets/images/spack-logo-white.svg" width="96"/> Spack
excerpt: A flexible package manager supporting multiple versions, configurations, platforms, and compilers.
header:
  overlay_image: /assets/images/sierra-banner.jpg
  overlay_filter: .5
  caption: "Photo: [**LLNL Sierra**](https://computing.llnl.gov/computers/sierra)"
  actions:
  - label: "<i class=\"fab fa-fw fa-github\"></i> GitHub"
    url: "https://github.com/spack/spack"
  - label: "<i class=\"fab fa-brands fa-x-twitter\"></i> @spackpm"
    url: "https://x.com/spackpm"
  - label: "<i class=\"fab fa-brands fa-mastodon\"></i> @spack"
    url: "https://mast.hpc.social/@spack"
  - label: "<i class=\"fab fa-slack\"></i> Slack"
    url: "https://slack.spack.io"
  - label: "<i class=\"fas fa-book\"></i> Docs"
    url: "https://spack.readthedocs.io/"
  - label: "<i class=\"fas fa-comments\"></i> Discussion"
    url: "https://github.com/spack/spack/discussions"
---

{% capture markdown %}
# Welcome to Spack!

Spack is a package manager for
[supercomputers](https://en.wikipedia.org/wiki/Supercomputer), Linux, and
macOS.  It makes installing scientific software easy.  Spack isn't tied
to a particular language; you can build a software stack in
[Python](https://spack.readthedocs.io/en/latest/basic_usage.html#extensions-python-support)
or R, link to libraries written in C, C++, or Fortran, and easily [swap
compilers](https://spack.readthedocs.io/en/latest/getting_started.html#compiler-configuration)
or target [specific
microarchitectures](https://spack.readthedocs.io/en/latest/basic_usage.html#support-for-specific-microarchitectures).
Learn more [here](/about/).  {% endcapture %}

{{ markdown | markdownify }}