uv

uv is an extremely fast Python package and project manager written in Rust, developed by Astral. It serves as a drop-in replacement for pip, pip-tools, pipx, poetry, pyenv, twine, virtualenv, and more — consolidating the entire Python toolchain into a single binary. uv is 10–100x faster than pip and resolves dependencies with a high-performance, PubGrub-based resolver.

Key features include:

• Unified Python toolchain — Manages Python versions, virtual environments, packages, scripts, and projects all from one CLI tool.
• Blazing fast performance — Written in Rust, uv resolves and installs packages 10–100x faster than pip, with a global cache to avoid redundant downloads.
• Drop-in pip compatibility — Supports pip install, pip compile, and pip sync interfaces so existing workflows migrate with minimal changes.
• Project management — Handles pyproject.toml-based projects with lockfiles (uv.lock) for reproducible environments, similar to poetry or PDM.
• Python version management — Installs and manages multiple Python versions, replacing pyenv, with automatic version selection per project.
• Script and tool runner — Run scripts with inline dependency metadata and install/run CLI tools in isolated environments, replacing pipx.
• Workspace support — Supports monorepo-style workspaces for managing multiple related Python packages in a single repository.
• Cross-platform — Works on Windows, macOS, and Linux with a single standalone binary requiring no Rust or Python pre-installed.
• Open source — Licensed under MIT and Apache 2.0, with full source code available on GitHub.

To get started, install uv via the standalone installer (curl -LsSf https://astral.sh/uv/install.sh | sh) or via pip (pip install uv). Then use uv init to create a new project, uv add to add dependencies, and uv run to execute scripts or tools.