Softwr

Developer Tools · head to head

ESLint vs SonarQube Cloud

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Rated
-
Full reviewWebsite
SonarQube Cloud logo

SonarQube Cloud

Software Development

Cloud-based static code analysis for detecting bugs, vulnerabilities, and code smells.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; SonarQube Cloud free tier limited to 50k lines of code for private projects.

Where they differ

Only the attributes on which ESLint and SonarQube Cloud actually diverge.

Attributes where ESLint and SonarQube Cloud differ
AttributeESLintSonarQube Cloud
Pricing modelUnknownfreemium
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentweb, api
CategoryDeveloper ToolsSoftware Development
Founded2019Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ESLint

Nothing recorded that SonarQube Cloud does not also cover.

Only in SonarQube Cloud

  • Static code analysis
  • Secrets detection
  • Pull request decoration
  • AI-driven code fixes
  • Compliance reporting
  • SCM integration

What people use each for

The jobs each tool is most often brought in to do.

ESLint

  • Statically analysing JavaScript and JSX to find problems before runtimenot SonarQube Cloud
  • Automatically fixing issues with syntax-aware rewritesnot SonarQube Cloud
  • Enforcing a consistent code style across a teamnot SonarQube Cloud
  • Running as a CI step to block non-conforming codenot SonarQube Cloud
  • Writing custom rules for project-specific conventionsnot SonarQube Cloud

SonarQube Cloud

  • Enforcing code quality gates on pull requestsnot ESLint
  • Detecting security vulnerabilities in cloud-hosted repositoriesnot ESLint
  • Scanning for exposed secrets before mergenot ESLint
  • Meeting compliance standards like PCI DSSnot ESLint
  • Tracking code quality trends across teamsnot ESLint

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ESLint

  • Slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Complexity in configuration from scratch, particularly for TypeScript support
  • Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features

SonarQube Cloud

  • Free tier limited to 50k lines of code for private projects.
  • Base Team pricing only covers up to 100,000 lines of code before extra charges apply.
  • Enterprise-grade compliance features require a custom-quoted Enterprise plan.
  • Primarily analysis-focused; lacks the runtime and cloud-workload protection of full CNAPP platforms.

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

SonarQube Cloud

Free
  • FreeFree
    • Private project up to 50k lines of code
    • Public/open-source projects free
  • Team$34/month
    • Up to 100,000 lines of code
    • 30+ languages
    • Bug and vulnerability detection
  • Enterprise$undefined/month
    • Advanced security reports
    • Audit logs
    • SSO/SCIM

Which should you pick?

Choose ESLint if

  • You want to start without paying.
  • You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
ESLint review

Choose SonarQube Cloud if

  • You need static code analysis.
  • You want to start without paying.
  • You work on web, api.
  • You also want secrets detection.
SonarQube Cloud review

Questions people ask

Is ESLint or SonarQube Cloud better?
Neither clearly leads. ESLint starts at Free and SonarQube Cloud at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or SonarQube Cloud?
ESLint starts at Free and SonarQube Cloud at Free.
Does ESLint or SonarQube Cloud run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. SonarQube Cloud runs on web, api.
Can I use ESLint for free?
Both have a free tier, so you can try either at no cost before committing.
What is ESLint best used for?
ESLint is most often used for statically analysing javascript and jsx to find problems before runtime, automatically fixing issues with syntax-aware rewrites, enforcing a consistent code style across a team, running as a ci step to block non-conforming code. Of those, statically analysing javascript and jsx to find problems before runtime and automatically fixing issues with syntax-aware rewrites are not what SonarQube Cloud is typically brought in for.
What can ESLint do that SonarQube Cloud cannot?
SonarQube Cloud covers Static code analysis, Secrets detection, Pull request decoration, AI-driven code fixes.

Answered from the vendors’ own pages

ESLint: Does ESLint automatically fix code issues?

Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.

Source
SonarQube Cloud: What does SonarQube Cloud cost?

The Team plan starts at $34/month for up to 100,000 lines of code, while Enterprise pricing is custom and quoted annually with additional compliance and SSO features.

Source
ESLint: How much does ESLint cost?

ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.

Source
SonarQube Cloud: Is there a free plan, and what are its limits?

Yes, the free tier lets you explore SonarQube Cloud on a private project up to a maximum of 50,000 lines of code; public projects are free.

Source
ESLint: Can I write custom ESLint rules?

Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.

Source
SonarQube Cloud: How is usage metered?

Billing is based on lines of code in the largest branch of a project; how often analysis runs does not affect the price.

Source
SonarQube Cloud: Can I change or cancel my plan?

There is no commitment on the Team plan, and customers can downgrade to the free tier at any time.

Source
Share

Related pages

More on ESLint

More on SonarQube Cloud

Keep looking

Other head to heads