vioscaleAI
Comparison

ESLint vs Qlty

On the evidence we track, ESLint leads this comparison with a composite score of 76/100. 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 formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★ESLint76
Qlty54
Score
vioscaleAI score
ESLint76 / 100high · 78%
Qlty54 / 100low · 49%
Pricing
Free tier
ESLint✓
Qlty✓
Model
Price level
ESLintfree
Qltymid
Starting price
ESLint–
Qlty$20
Transparent
ESLint–
Qlty✓
Integrations
Count
ESLint2
Qlty6
Security
Certifications
ESLint–
QltySOC 2 Type II
Scorecard
ESLint6.6
Qlty–
Soc2
ESLint–
Qlty✓
Vulnerabilities
Reliability
Status page
ESLint–
Qlty✓
Adoption
Dependent repos
ESLint1,569,244
Qlty0
Github stars
ESLint27,559
Qlty3,186
Package downloads weekly
ESLint158,743,826
Qlty–
Activity
Commits last 30d
ESLint44
Qlty45
Release
Cadence days
ESLint13
Qlty2
History
License
Spdx
ESLintMIT
Qlty–
Language
Primary
ESLintJavaScript
QltyC
Market
Availability
Content
Faq
ESLint5 items
Qlty7 items

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

Open-source linter that uses abstract syntax tree analysis to detect JavaScript code issues and apply syntax-aware fixes, with extensive customization through custom rules and parsers.

Independently observed

Qlty

A code quality and coverage platform combining linting, auto-formatting, security scanning, duplication detection, and code coverage analysis with AI-powered fix suggestions, deployed as a cloud service with a local CLI.

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/contributor/moHybridFree tier

Free plan available. Pro from $20/contributor/month. Enterprise $30/contributor/month with volume discounts (5% off 100+ seats, 10% off 200+ seats annually).

  • FreeFree
    • Linting & auto-formatting
    • Code coverage
    • Maintainability & duplication
    • Open, extensible Rust CLI
    • Unlimited private/public contributors
    • +1 more
  • Pro$20/contributor/month
    • Everything from Free
    • Shared configurations
    • Trends & hotspots
    • One year of history
    • Accelerated analysis
    • +10 more
  • EnterpriseContact sales
    • Everything from Pro
    • Advanced analytics
    • Organization policies
    • Custom permissions
    • Audit logs
    • +6 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
Still deciding?

ESLint or Qlty: 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.