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Next-gen
Python tooling
Fast, unified, futuristic
Astral’s mission is to make the Python ecosystem more productive by building high-performance developer tools, starting with Ruff.

Linting the CPython codebase, from scratch.
Ruff
ssAutoflake
ssFlake8
ssPyflakes
sspycodestyle
ssPylint
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Tried and tested.Powering impactful projects across open source.
Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually running.
Sebastián RamírezCreator of FastAPI
Why is Ruff a gamechanger? Primarily because it’s nearly 1000x faster. Literally. Not a typo.
Nick SchrockFounder of Elementl, co-creator of GraphQL
Just switched my first project to Ruff. Only one downside so far: it's so fast I couldn't believe it was working until I intentionally introduced some errors.
Timothy CrosleySoftware Engineer at Stripe, Creator of isort
Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually running.
Sebastián RamírezCreator of FastAPI
Why is Ruff a gamechanger? Primarily because it’s nearly 1000x faster. Literally. Not a typo.
Nick SchrockFounder of Elementl, co-creator of GraphQL
Just switched my first project to Ruff. Only one downside so far: it's so fast I couldn't believe it was working until I intentionally introduced some errors.
Timothy CrosleySoftware Engineer at Stripe, Creator of isort
Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually running.
Sebastián RamírezCreator of FastAPI
Why is Ruff a gamechanger? Primarily because it’s nearly 1000x faster. Literally. Not a typo.
Nick SchrockFounder of Elementl, co-creator of GraphQL
Just switched my first project to Ruff. Only one downside so far: it's so fast I couldn't believe it was working until I intentionally introduced some errors.
Timothy CrosleySoftware Engineer at Stripe, Creator of isort
Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually running.
Sebastián RamírezCreator of FastAPI
Why is Ruff a gamechanger? Primarily because it’s nearly 1000x faster. Literally. Not a typo.
Nick SchrockFounder of Elementl, co-creator of GraphQL
Just switched my first project to Ruff. Only one downside so far: it's so fast I couldn't believe it was working until I intentionally introduced some errors.
Timothy CrosleySoftware Engineer at Stripe, Creator of isort