Astral

Free plan LinuxMacWindows

What Astral is

Astral builds developer tools for Python, including Ruff, a linter, and uv, a package and project manager. Both are written in Rust, and Astral says its goal is to improve productivity across the Python ecosystem. uv includes project management, a universal lockfile, script execution, Python version management, tool installation, workspaces and a pip-compatible interface. Astral describes that interface as providing a 10–100x speedup over pip. uv supports macOS, Linux and Windows, and its documented integrations include Docker, Jupyter, GitHub Actions, GitLab CI/CD, PyTorch and AWS Lambda. Astral says its tools are open source and permissively licensed, and lists them as free. It also describes security practices that include read-only default workflow permissions, full-length commit-SHA pinning and release attestations. Documentation directs users to Discord for support. The separate pyx registry offers optimized installs and other package controls, but is no longer accepting new signups. Astral has announced an agreement to join OpenAI as part of the Codex team.

Who it suits

Astral's tools suit Python developers looking for a linter and package or project management across macOS, Linux or Windows. The documented integrations may also be useful to teams using the listed development and CI tools.

What it does well

Ruff and uv are free and permissively licensed.
uv includes project management and a universal lockfile.
Supports macOS, Linux and Windows.
Documentation lists integrations across developer and CI tools.

What to know first

pyx is no longer accepting new signups.
Support is directed through the Discord community.

Plans

Plan	Billed and limits	Price
Open-source Astral tools	Ruff, uv and ty · free forever · open source · permissively licensed	Free

As astral.sh lists them, read 1 Oct 2026. The maker's own page has the final word.

Getting started

Visit astral.sh.
Choose Ruff, uv, or ty from the free open-source tools.
Use the documentation for uv’s supported systems and integrations.
Join Astral’s Discord community for support.

Verdict

Astral offers free, open-source Python tools for linting and package and project management. The separate pyx registry is closed to new signups, and support is directed to Discord.

Questions

Are Astral’s tools free?

The listed plan for Ruff, uv, and ty is free and is free forever.

Are the tools open source?

Astral says its tools are open source and permissively licensed.

Which systems does uv support?

uv supports macOS, Linux, and Windows.

What does uv do?

It provides project management, a universal lockfile, script execution, Python version management, tool installation, workspaces, and a pip-compatible interface.

What integrations are listed for uv?

Its documentation lists integrations including Docker, Jupyter, GitHub Actions, GitLab CI/CD, PyTorch, FastAPI, AWS Lambda, and Coiled.

Can new users sign up for pyx?

The pyx registry is no longer accepting new signups.

Facts from Astral's own pages

Integrations: uv documentation lists integrations for Docker, Jupyter, marimo, GitHub Actions, GitLab CI/CD, pre-commit, PyTorch, FastAPI, Bazel, artifact registries, Renovate, Dependabot, AWS Lambda and Coiled. · docs.astral.sh, 1 Oct 2026
Mission: Astral builds high-performance developer tools to make the Python ecosystem more productive. · astral.sh, 1 Oct 2026
Open source: Astral says its tools are open source and permissively licensed. · astral.sh, 1 Oct 2026
Ownership: Astral announced an agreement to join OpenAI as part of the Codex team. · astral.sh, 1 Oct 2026
pyx availability: The pyx Python-native package registry is no longer accepting new signups. · astral.sh, 1 Oct 2026
pyx features: pyx provides optimized installs from PyPI, PyTorch and private sources, compliance filtering, uv integration, seamless authentication and GPU-aware package selection. · astral.sh, 1 Oct 2026
Release security: Astral says it uses Trusted Publishing, Sigstore attestations, immutable GitHub releases and checksum-embedded standalone installers where possible. · astral.sh, 1 Oct 2026
Ruff: Ruff is an extremely fast Python linter written in Rust. · astral.sh, 1 Oct 2026
Security controls: Astral says it forbids dangerous GitHub Actions triggers, uses full-length commit-SHA pinning, defaults workflow permissions to read-only and isolates deployment secrets. · astral.sh, 1 Oct 2026
Support: Astral's documentation directs users to join its Discord community for support. · docs.astral.sh, 1 Oct 2026
Supported systems: uv supports macOS, Linux and Windows. · docs.astral.sh, 1 Oct 2026
uv: uv is an extremely fast Python package and project manager written in Rust. · docs.astral.sh, 1 Oct 2026
uv capabilities: uv provides project management, a universal lockfile, script execution, Python version management, tool installation, workspaces and a pip-compatible interface. · docs.astral.sh, 1 Oct 2026
uv speed: The uv pip interface is described as providing a 10-100x speedup over pip. · docs.astral.sh, 1 Oct 2026

Where Astral stands on Freedom251

Python Package Managers#2 of 27
Linters#6 of 33