Comparison

RubyGems vs uv

No leader: the top candidate RubyGems has only 0.31 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

RubyGems full profile →uv full profile →

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RubyGems80

uv67

Attribute comparison across 2 tools
Attribute	RubyGems	uv
Vioscale score	80 / 100low · 31%	67 / 100high · 77%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	free	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	-	17
Security
Disclosure policysecurity.disclosure_policy	✓	-
Scorecardsecurity.scorecard	8.3	-
Vulnerabilitiessecurity.vulnerabilities	Count: 5 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=bundler&per_page=100 · Last 12m: 0 · Max severity: CRITICAL	Count: 5 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=uv&per_page=100 · Last 12m: 4 · Max severity: MODERATE
Reliability
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	225,927	2
Github starsadoption.github_stars	3,954	89,118
Package downloads weeklyadoption.package_downloads_weekly	-	44,329,091
Activity
Commits last 30dactivity.commits_last_30d	100	100
Release
Cadence daysrelease.cadence_days	6	3
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	Ruby	Rust

Score

Vioscale score

RubyGems80 / 100low · 31%

uv67 / 100high · 77%

Pricing

Free tier

RubyGems✓

uv✓

Model

RubyGemsfree

uvcommercial

Price level

RubyGemsfree

uvfree

Transparent

RubyGems✓

uv–

Integrations

Count

RubyGems–

uv17

Security

Disclosure policy

RubyGems✓

uv–

Scorecard

RubyGems8.3

uv–

Vulnerabilities

RubyGemsCount: 5 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=bundler&per_page=100 · Last 12m: 0 · Max severity: CRITICAL

uvCount: 5 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=uv&per_page=100 · Last 12m: 4 · Max severity: MODERATE

Reliability

Status page

RubyGems✓

uv–

Adoption

Dependent repos

RubyGems225,927

uv2

Github stars

RubyGems3,954

uv89,118

Package downloads weekly

RubyGems–

uv44,329,091

Activity

Commits last 30d

RubyGems100

uv100

Release

Cadence days

RubyGems6

uv3

History

RubyGems20 items

uv20 items

License

Spdx

RubyGems–

uvApache-2.0

Language

Primary

RubyGemsRuby

uvRust

Capabilities

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

Capability comparison for Package Registries
Capability	RubyGems	uv
Core
Role	Public registry	Package manager client
Ecosystem
Ecosystem / language	Ruby	Python
Deployment
Deployment	SaaS	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

RubyGemsPublic registry

uvPackage manager client

Ecosystem

Ecosystem / language

RubyGemsRuby

uvPython

Deployment

RubyGemsSaaS

uvCLI-local

Formats

Package formats supported

RubyGemsSingle ecosystem

uvMany formats

Hosting

Private / scoped packages

RubyGems-

uv-

Upstream proxy / caching

RubyGems-

uv-

Resolution

Lockfile / deterministic installs

RubyGems-

uv✓

Workspaces / monorepo

RubyGems-

uv✓

Content-addressable store

RubyGems-

uv-

Supply chain

Supply-chain integrity

RubyGems-

uv✓

Vulnerability / licence scanning

RubyGems-

uv-

Licensing

Openness

RubyGemsOpen-source

uvOpen-source

Pricing

Pricing model

RubyGemsFree / OSS

uvFree / OSS

What each one is

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

RubyGems

RubyGems is an open-source package hosting and distribution platform where Ruby developers discover, install, and publish gems (libraries). As a free, community-maintained service, it processes billions of downloads and is central to the Ruby development ecosystem.

Independently observed

uv

A unified command-line tool that consolidates the functionality of multiple Python package management and development utilities into a single interface. It delivers substantially faster dependency resolution and installation compared to traditional package managers.

Independently observed

Pricing

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

RubyGems

Free

Free. Community-funded via donations and sponsorships.

Free Public RegistryFree
- Unlimited gem uploads
- Unlimited downloads
- Community support

as of 2026-08-03verify ↗

uv

Open sourceFree tier

as of 2026-08-14verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	RubyGems	uv
WebPlatforms	✓	✗
macOSPlatforms	✗	✓
WindowsPlatforms	✗	✓
LinuxPlatforms	✗	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✗	✓

Platforms

Web

RubyGems✓

uv✗

macOS

RubyGems✗

uv✓

Windows

RubyGems✗

uv✓

Linux

RubyGems✗

uv✓

CLI

RubyGems✓

uv✓

Deployment

Cloud / SaaS

RubyGems✓

uv✗

Self-hosted

RubyGems✗

uv✓

Integrations

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

RubyGems

Not documented yet.

uv

10 total

Docker
GitHub Actions
GitLab CI/CD
AWS Lambda
Azure Artifacts
AWS CodeArtifact
JFrog Artifactory
PyTorch
FastAPI
Jupyter

Independently observed

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