uv
An extremely fast Python package and project manager, written in Rust.
The Lens
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
Updated Aug 2026
Uv replaces all of them. It's a single tool that handles Python version management, virtual environments, package installation, and project management. And it does it 10-100x faster than pip because it's written in Rust.
Everything is free. No paid tier, no cloud, no account. Install it and it replaces pip, pip-tools, pyenv, virtualenv, and pipx in one binary. The speed difference isn't marginal. It's 'blink and it's done' versus 'go get coffee.'
The catch: uv is now an OpenAI project. OpenAI announced it was acquiring Astral (the team behind uv and Ruff) in March 2026 and pledged to keep the open source tools free. Astral's paid play was always pyx, a private package registry, not the CLI, so uv itself stays free. Some edge cases with legacy packages that rely on setup.py quirks can still trip it up. But the Python community has clearly voted.
Free vs Self-Hosted vs Paid
fully freeFully open source under Apache 2.0. No paid tier, no hosted service for the CLI. Astral's monetization play is pyx, a paid private package registry, not uv itself. OpenAI announced it was acquiring Astral in March 2026 and pledged to keep the open source tools free, so the CLI stays free.
Replaces a stack of free tools (pip, pyenv, virtualenv, pipx), so the value isn't cost savings. It's developer time. A 100x speedup on dependency resolution across a team of 10 devs who install packages daily adds up fast.
Free. The uv CLI is open source with no paid tier. Astral's paid product is pyx, a private package registry; OpenAI announced it was acquiring Astral in March 2026.
What to do by team size
- Solo
- No reason not to use it. Faster than pip at everything.
- Small team
- Standardize on it. The lockfile (`uv.lock`) and reproducible environments solve 'works on my machine' for Python.
- Medium team
- Strong choice. Speeds up CI pipelines measurably. `uv pip compile` replaces pip-tools.
- Large team
- Safe to standardize on. uv is Apache-licensed and now an OpenAI project after the March 2026 Astral acquisition; the CLI stays free, and worst case you can fork.
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Trust Signals
License: Apache License 2.0
Use freely. Patent grant included.
Commercial use: ✓ Yes
About
- Owner
- Astral (Organization)
- Backed by
- Astral (YC, Accel)
- Stars
- 90,080
- Forks
- 3,606
- trending
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