Comparison

Poetry vs Yarn

No clear leader: Yarn (63.5) and Poetry (58.9) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Poetry59
Yarn64
Score
vioscaleAI score
Poetry59 / 100high · 77%
Yarn64 / 100high · 75%
Pricing
Free tier
Poetry✓
Yarn✓
Model
Price level
Poetryfree
Yarnfree
Transparent
Poetry✓
Yarn–
Integrations
Count
Poetry1
Yarn3
Reliability
Status page
Poetry✓
Yarn✓
Adoption
Dependent repos
Poetry1,968
Yarn13,468
Github stars
Poetry34,312
Yarn8,110
Package downloads weekly
Activity
Commits last 30d
Poetry28
Yarn18
Release
Cadence days
Poetry14
Yarn20
History
License
Spdx
PoetryMIT
Language
Primary
Content
Faq
Poetry5 items

Capabilities

Feature-by-feature on the axes that matter for package registries. “-” means undocumented, not absent.

Core
Role
PoetryPackage manager client
YarnPackage manager client
Ecosystem
Ecosystem / language
PoetryPython
YarnJavaScript
Deployment
Deployment
PoetryCLI-local
YarnCLI-local
Formats
Package formats supported
PoetryMany formats
YarnMany formats
Hosting
Private / scoped packages
Poetry✓
Yarn✓
Upstream proxy / caching
Poetry-
Yarn-
Resolution
Lockfile / deterministic installs
Poetry✓
Yarn✓
Workspaces / monorepo
Poetry-
Yarn✓
Content-addressable store
Poetry-
Yarn-
Supply chain
Supply-chain integrity
Poetry-
Yarn✓
Vulnerability / licence scanning
Poetry-
Yarn✓
Licensing
Openness
PoetryOpen-source
YarnOpen-source
Pricing
Pricing model
PoetryFree / OSS
YarnFree / OSS

What each one is

The product in its own terms, so the numbers below have context.

Poetry

A tool for declaring, managing, and installing Python dependencies while supporting both package development and distribution through source distributions and wheels.

Independently observed

Yarn

Yarn is a modern package manager for JavaScript projects that prioritizes deterministic installations and includes built-in support for monorepos. It provides a complete solution for managing both dependencies and project structure with a focus on reliability and security.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Poetry

Free
as of verify ↗

Yarn

Open source
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
macOS
Poetry✗
Yarn✓
Windows
Poetry✗
Yarn✓
Linux
Poetry✗
Yarn✓
CLI
Poetry✓
Yarn✓
Deployment
Self-hosted
Poetry✓
Yarn✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Poetry

1 total
  • PyPI
Independently observed

Yarn

3 total
  • GitHub
  • Git
  • npm
Independently observed
Still deciding?

Poetry or Yarn: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.