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Developer Tools · head to head

ESLint vs Radix UI

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite
Radix UI logo

Radix UI

Web Development

Unstyled, accessible React component primitives

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Radix UI you write all the styling, so time to a finished interface is much longer than with a styled library
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which ESLint and Radix UI actually diverge.

Attributes where ESLint and Radix UI differ
AttributeESLintRadix UI
Pricing modelUnknownOpen source, no licence fee
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentWeb
CategoryDeveloper ToolsWeb 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 Radix UI does not also cover.

Only in Radix UI

  • Unstyled primitives
  • Accessibility built in
  • Composable API
  • Controlled or uncontrolled

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 Radix UI
  • Automatically fixing issues with syntax-aware rewritesnot Radix UI
  • Enforcing a consistent code style across a teamnot Radix UI
  • Running as a CI step to block non-conforming codenot Radix UI
  • Writing custom rules for project-specific conventionsnot Radix UI

Radix UI

  • Design systems that need correct accessibility without inherited visual opinionsnot ESLint
  • Replacing hand-built dropdowns and dialogs that have accessibility bugsnot ESLint
  • Teams with a designer whose output should not be constrained by a library’s themenot 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

Radix UI

  • You write all the styling, so time to a finished interface is much longer than with a styled library
  • Composable part-based APIs are more verbose than a single component with props
  • Covers primitives rather than complex widgets, so data grids and date pickers come from elsewhere

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Radix UI

Free
  • Radix UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

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 Radix UI if

  • You need unstyled primitives.
  • You want to start without paying.
  • You also want accessibility built in.
Radix UI review

Questions people ask

Is ESLint or Radix UI better?
Neither clearly leads. ESLint starts at Free and Radix UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Radix UI?
ESLint starts at Free and Radix UI at Free.
Does ESLint or Radix UI run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Radix UI runs on Web.
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 Radix UI is typically brought in for.
What can ESLint do that Radix UI cannot?
Radix UI covers Unstyled primitives, Accessibility built in, Composable API, Controlled or uncontrolled.

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
Radix UI: Is Radix UI free?

Yes, open source under the MIT licence.

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
Radix UI: Why use unstyled components?

Because accessibility is the hard part and visual design is the part teams want to own. Radix gives the first and stays out of the second.

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
Radix UI: What is the relationship with shadcn/ui?

shadcn/ui is built on Radix primitives, adding Tailwind styling and copy-paste distribution on top.

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