Comparison

PyPI vs Yarn

On the evidence we track, Yarn leads this comparison with a composite score of 62/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

PyPI full profile →Yarn full profile →

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PyPI51

★Yarn62

Attribute comparison across 2 tools
Attribute	PyPI	YarnLeader
Vioscale score	51 / 100low · 23%updating	62 / 100medium · 71%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	free	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Security
Disclosure policysecurity.disclosure_policy	✓	-
Scorecardsecurity.scorecard	7.8	3.4
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fpypa%2Fwarehouse&per_page=100 · Last 12m: 0	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40yarnpkg%2Fparsers&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	0	13,468
Github starsadoption.github_stars	4,135	8,100
Package downloads weeklyadoption.package_downloads_weekly	-	9,559,608
Activity
Commits last 30dactivity.commits_last_30d	69	18
Release
Cadence daysrelease.cadence_days	-	15
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	Apache-2.0	BSD-2-Clause
Language
Primarylanguage.primary	Python	TypeScript
Market
Availabilitymarket.availability	Available worldwide	-

Score

Vioscale score

PyPI51 / 100low · 23%updating

Yarn62 / 100medium · 71%updating

Pricing

Free tier

PyPI✓

Yarn✓

Model

PyPIfree

Yarncommercial

Price level

PyPIfree

Yarnfree

Transparent

PyPI✓

Yarn–

Security

Disclosure policy

PyPI✓

Yarn–

Scorecard

PyPI7.8

Yarn3.4

Vulnerabilities

PyPICount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fpypa%2Fwarehouse&per_page=100 · Last 12m: 0

YarnCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40yarnpkg%2Fparsers&per_page=100 · Last 12m: 0

Reliability

Status page

PyPI✓

Yarn✓

Adoption

Dependent repos

PyPI0

Yarn13,468

Github stars

PyPI4,135

Yarn8,100

Package downloads weekly

PyPI–

Yarn9,559,608

Activity

Commits last 30d

PyPI69

Yarn18

Release

Cadence days

PyPI–

Yarn15

History

PyPI–

Yarn20 items

License

Spdx

PyPIApache-2.0

YarnBSD-2-Clause

Language

Primary

PyPIPython

YarnTypeScript

Market

Availability

PyPIAvailable worldwide

Yarn–

Capabilities

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

Capability comparison for Package Registries
Capability	PyPI	Yarn
Core
Role	Public registry	Package manager client
Ecosystem
Ecosystem / language	Python	JavaScript
Deployment
Deployment	Both	CLI-local
Formats
Package formats supported	Single ecosystem	Many formats
Hosting
Private / scoped packages	-	✓
Upstream proxy / caching	-	-
Resolution
Lockfile / deterministic installs	-	-
Workspaces / monorepo	-	✓
Content-addressable store	-	-
Supply chain
Supply-chain integrity	-	-
Vulnerability / licence scanning	-	-
Licensing
Openness	Open-source	Open-source
Pricing
Pricing model	Free / OSS	Free / OSS

Core

Role

PyPIPublic registry

YarnPackage manager client

Ecosystem

Ecosystem / language

PyPIPython

YarnJavaScript

Deployment

PyPIBoth

YarnCLI-local

Formats

Package formats supported

PyPISingle ecosystem

YarnMany formats

Hosting

Private / scoped packages

PyPI-

Yarn✓

Upstream proxy / caching

PyPI-

Yarn-

Resolution

Lockfile / deterministic installs

PyPI-

Yarn-

Workspaces / monorepo

PyPI-

Yarn✓

Content-addressable store

PyPI-

Yarn-

Supply chain

Supply-chain integrity

PyPI-

Yarn-

Vulnerability / licence scanning

PyPI-

Yarn-

Licensing

Openness

PyPIOpen-source

YarnOpen-source

Pricing

Pricing model

PyPIFree / OSS

YarnFree / OSS

What each one is

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

PyPI

PyPI is the official package registry for Python, serving as a centralized platform where developers can find and install community-created software, and package authors can distribute their work.

Independently observed

Yarn

Leader

Yarn is a package manager that functions as both a package and project manager, supporting everything from simple projects to industry monorepos for open source developers and enterprise users.

Independently observed

Pricing

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

PyPI

FreeFree tier

Completely free with no associated costs.

as of 2026-08-14verify ↗

Yarn

Leader

Open sourceFree tier

as of 2026-08-13verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	PyPI	Yarn
WebPlatforms	✓	✗
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓

Platforms

Web

PyPI✓

Yarn✗

CLI

PyPI✓

Yarn✓

Deployment

Cloud / SaaS

PyPI✓

Yarn✗

Self-hosted

PyPI✓

Yarn✓

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