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SPECIFICTION
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Tank vs uv

Tank

tankpkg.dev

uv

docs.astral.sh

Side by side

FigureTankuv
Price fromFreeFree
Free planYesYes
Free trial——
Open source——
WebYes—
WindowsYesYes
macOSYesYes
LinuxYesYes
APIYes—
Self-hostedYes—
Plans published11
Spec score · Package Managers8.5 (#21)8.9 (#4)
Dependency resolutionYesYes
Free planYesYes
Lockfile supportYesYes
Package formatsTank supports seven skill primitives: instruction, hook, tool, agent, rule, resource, and prompt, which can be combined into bundles.source distributions,wheels,requirements.txt,pylock.toml
Private registry authYesYes
PurposeTank is a security-first package manager for AI agent packages and skills.uv is an extremely fast Python package and project manager written in Rust.
Supported platformsClaude Code,Cursor,GitHub Copilot,Codex,Windsurf,OpenCode,Cline,Roo CodemacOS,Linux,Windows,CPython,PyPy,Pyodide,GraalPy

Plans

Tank

  • FreeFree

Tank pricing →

uv

  • uvFree

uv pricing →

In their own words

Tank

Tank has no write-up on Specifiction yet; its figures are above.

Visit tankpkg.dev

uv

uv is a Python package and project manager for Linux, macOS, and Windows. Written in Rust, it manages dependencies and environments, with lockfiles and workspaces, and can install, list, pin, or uninstall Python versions. It also runs scripts with dependencies and runs or installs command-line tools from Python packages. Its pip-compatible interface is intended to cover work done by tools such as pip, pip-tools, pipx, poetry, pyenv, twine, and virtualenv, though its commands do not exactly match those tools. The documentation describes uv as 10–100x faster than pip. It supports source distributions, wheels, requirements.txt, and pylock.toml, as well as offline installation and private registry authentication. For package selection, its default first-index strategy limits candidates to the first index where a package is found. Credentials are not stored in uv.lock, but uv currently stores them in a plaintext file; native system secret storage is an experimental preview. The free plan is free.

Visit docs.astral.sh