vioscale
Comparison

ESLint vs Qlty

On the evidence we track, ESLint leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

ESLint full profile →Qlty full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
★ESLint74
Qlty52
Score
Vioscale score
ESLint74 / 100high · 79%
Qlty52 / 100medium · 54%
Pricing
Free tier
ESLint✓
Qlty✓
Model
Price level
ESLintfree
Qltymid
Transparent
ESLint–
Qlty✓
Integrations
Count
ESLint2
Qlty6
Security
Scorecard
ESLint6.3
Qlty–
Soc2
ESLint–
Qlty✓
Vulnerabilities
Reliability
Status page
ESLint–
Qlty✓
Adoption
Dependent repos
ESLint1,569,244
Qlty0
Github stars
ESLint27,484
Qlty3,130
Package downloads weekly
ESLint160,098,819
Qlty–
Activity
Commits last 30d
ESLint50
Qlty9
Release
Cadence days
ESLint13
Qlty4
History
License
Spdx
ESLintMIT
Qlty–
Language
Primary
ESLintJavaScript
QltyRust
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for code quality tools. “-” means undocumented, not absent.

Core
Function
ESLintLinter + formatter
QltyQuality platform
Language scope
ESLintSingle-language
QltyMulti-language
Implementation language
ESLintJavaScript
QltyRust
Capability
Autofix
ESLint✓
Qlty✓
Config
Config model
ESLintConfig file
QltyConfig file
Extensibility
Custom rules
ESLint✓
Qlty✓
Deployment
Deployment
ESLintCLI-local
QltyBoth
Delivery
Editor integration
ESLint✓
Qlty✓
CI / VCS gating
ESLint✓
Qlty✓
Insight
Code metrics
ESLint-
Qlty✓
Performance
Incremental / monorepo aware
ESLint-
Qlty✓
Licensing
Open-source
ESLintOSS
QltyOpen-core
Commercial
Pricing model
ESLintFree
QltyPer-contributor

What each one is

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

ESLint

Leader

An open-source linter and fixer for JavaScript and JSX that runs locally in editors and CI pipelines. It uses AST analysis to catch problems and can automatically fix many issues, with full support for custom rules and extensibility.

Independently observed

Qlty

A code quality platform that automatically analyzes pull requests for linting, formatting, security issues, and code coverage with AI-generated fixes. Supports 40+ languages and integrates with GitHub, IDEs, and CI systems.

Independently observed

Pricing

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

ESLint

Leader
Open sourceFree tier

Free open source

  • Open SourceFree
    • Find issues in JavaScript code
    • Automatically fix problems
    • Custom parsers
    • Custom rules
    • Text editor integration
    • +1 more
as of verify ↗

Qlty

from $20/moSubscriptionFree tier

Free plan available. Pro from $20/contributor/month. Enterprise from $30/contributor/month. Annual plans include 2 months free.

  • FreeFree
    • Unlimited public and private repositories
    • Unlimited contributors
    • 1,000 analysis minutes per month
    • 100 AI autofixes per month
    • Linting and auto-formatting
    • +8 more
  • Pro$20/contributor/month. Annual billing includes 2 months free.
    • Everything in Free, plus:
    • Shared configurations
    • Trends and hotspots
    • 1 year of history
    • Accelerated analysis
    • +6 more
  • EnterpriseContact sales
    • Everything in Pro, plus:
    • Advanced analytics
    • Organization policies
    • Custom permissions
    • Audit logs
    • +9 more
as of verify ↗

Platform & deployment

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

Platforms
Web
ESLint✗
Qlty✓
macOS
ESLint✗
Qlty✓
Windows
ESLint✗
Qlty✓
Linux
ESLint✗
Qlty✓
CLI
ESLint✓
Qlty✓
Deployment
Cloud / SaaS
ESLint✗
Qlty✓
Self-hosted
ESLint✓
Qlty✗

Integrations

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

ESLint

Leader
2 total
  • eslint-plugin-react
  • eslint-plugin-unicorn
Independently observed

Qlty

6 total
  • GitHub
  • Visual Studio Code
  • GitHub Actions
  • CircleCI
  • Chrome
  • Firefox
Independently observed

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