Astral

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Freedom report

Three barsScore 6.5

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

Astral is ranked #5 of 33 in linters on Freedom251. It runs on Linux, macOS, Windows. There is a free plan.

Astral plans and pricing

All plans

Open-source Astral tools Free Ruff, uv and ty · free forever · open source · permissively licensed astral.sh · 1 Oct 2026

Compared on linters

Free plan: Yes
Languages supported: 1
Autofix: Yes
Custom rules: No
Security rules: Yes
IDE support: ide
CI support: Yes

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The record

Mission: Astral builds high-performance developer tools to make the Python ecosystem more productive.
Ruff: Ruff is an extremely fast Python linter written in Rust.
uv: uv is an extremely fast Python package and project manager written in Rust.
uv speed: The uv pip interface is described as providing a 10-100x speedup over pip.
uv capabilities: uv provides project management, a universal lockfile, script execution, Python version management, tool installation, workspaces and a pip-compatible interface.
Supported systems: uv supports macOS, Linux and Windows.
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.
Open source: Astral says its tools are open source and permissively licensed.
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.
Release security: Astral says it uses Trusted Publishing, Sigstore attestations, immutable GitHub releases and checksum-embedded standalone installers where possible.
Support: Astral's documentation directs users to join its Discord community for support.
pyx availability: The pyx Python-native package registry is no longer accepting new signups.
pyx features: pyx provides optimized installs from PyPI, PyTorch and private sources, compliance filtering, uv integration, seamless authentication and GPU-aware package selection.
Ownership: Astral announced an agreement to join OpenAI as part of the Codex team.
Price from: Free

Where it ranks on Freedom251

Best Linters in 2026#5 of 33
Best Python Package Managers in 2026#6 of 27

Is Astral yours?

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Sources

astral.sh/about· checked 1 Oct 2026
astral.sh· checked 1 Oct 2026
docs.astral.sh/uv/· checked 1 Oct 2026
astral.sh/blog/open-source-security-at-astral· checked 1 Oct 2026
docs.astral.sh· checked 1 Oct 2026
astral.sh/pyx· checked 1 Oct 2026
astral.sh/blog/openai· checked 1 Oct 2026
astral.sh/blog/introducing-pyx· checked 1 Oct 2026